このtcpdumpの更新では、次の問題が修正されます：修正されたセキュリティ問題（bsc#1020940）：

  - CVE-2016-7922：AHパーサーのprint-ah.c：ah_print()にバッファオーバーフローがあります。

  - CVE-2016-7923：ARPパーサーのprint-arp.c：arp_print()にバッファオーバーフローがあります。

  - CVE-2016-7925：圧縮されたSLIPパーサーのprint-sl.c：sl_if_print()にバッファオーバーフローがあります。

  - CVE-2016-7926：イーサネットパーサーのprint-ether.c：ethertype_print()にバッファオーバーフローがあります。

  - CVE-2016-7927：IEEE 802.11パーサーのprint-802_11.c：ieee802_11_radio_print()内のバッファオーバーフローを修正しました。

  - CVE-2016-7928：IPCompパーサーのprint-ipcomp.c：ipcomp_print()にバッファオーバーフローがあります。

  - CVE-2016-7931：MPLSパーサーのprint-mpls.c：mpls_print()にバッファオーバーフローがあります。

  - CVE-2016-7936：UDPパーサーのprint-udp.c：udp_print()にバッファオーバーフローがあります。

  - CVE-2016-7934、CVE-2016-7935、CVE-2016-7937：関数udp_print()内のセグメンテーション違反を修正しました。

  - CVE-2016-7939：GREパーサーのprint-gre.c：（複数の関数）。

  - CVE-2016-7940：STPパーサーのprint-stp.c：（複数の関数）。

  - CVE-2016-7973：AppleTalkパーサーのprint-atalk.c内のバッファオーバーフローを修正しました。

  - CVE-2016-7974：IPパーサーのprint-ip.c：（複数の関数）。

  - CVE-2016-7975：TCPパーサーのprint-tcp.c：tcp_print()にバッファオーバーフローがあります。

  - CVE-2016-7983、CVE-2016-7984：TFTPパーサーのprint-tftp.c：tftp_print()にバッファオーバーフローがあります。

  - CVE-2016-7992：Classical IP over ATMパーサーのprint-cip.c内のバッファオーバーフローを修正しました。

  - CVE-2016-7993：複数のプロトコルパーサー（DNS、DVMRP、HSRPなど）内のバッファオーバーフローを修正しました。

  - CVE-2016-8574：FRF.15パーサーのprint-fr.c：frf15_print()内のバッファオーバーフローを修正しました。

  - CVE-2017-5202：ISO CLNSパーサーのprint-isoclns.c：clnp_print()にバッファオーバーフローがあります。

  - CVE-2017-5203：BOOTPパーサーのprint-bootp.c：bootp_print()にバッファオーバーフローがあります。

  - CVE-2017-5204：IPv6パーサーのprint-ip6.c：ip6_print()内のバッファオーバーフローを修正しました。

  - CVE-2017-5483：SNMPパーサーのprint-snmp.c：asn1_parse()内のバッファオーバーフローを修正しました。

  - CVE-2017-5484：ATMパーサーのprint-atm.c：sig_print()にバッファオーバーフローがあります。

  - CVE-2017-5485：ISO CLNSパーサーのaddrtoname.c：lookup_nsap()にバッファオーバーフローがあります。

  - CVE-2017-5486：ISO CLNSパーサーのprint-isoclns.c：clnp_print()にバッファオーバーフローがあります。

注意：Tenable Network Securityは、前述の記述ブロックをSUSEセキュリティアドバイザリから直接抽出しています。Tenableでは、新たな問題を持ち込まずに、できる限り自動的に整理して書式設定するようにしています。

出典: Red Hatセキュリティアドバイザリ2017:1871:tcpdumpの更新がRed Hat Enterprise Linux 7用に入手可能になりました。Red Hat製品セキュリティは、この更新がセキュリティに及ぼす影響を重要度中として評価しています。詳細な重要度評価を示すCVSS（共通脆弱性評価システム）ベーススコアは、「参照」セクションのCVEリンクから脆弱性ごとに入手できます。tcpdumpパッケージには、ネットワークトラフィックを監視するtcpdumpユーティリティが含まれています。tcpdumpユーティリティは、特定のネットワークインターフェイスまたはすべてのインターフェイス上のパケットヘッダーを取得することができます。次のパッケージが新しいアップストリームバージョンにアップグレードされました：tcpdump（4.9.0）（BZ#1422473）セキュリティ修正プログラム：* tcpdumpで複数の領域外読み取りと整数のオーバーフローの脆弱性がさまざまなプロトコルの解読に影響していることが判明しました。攻撃者は細工されたpcapファイルを作成するか、tcpdumpがライブキャプチャモード（-wなし）で実行されているネットワークセグメントに特別に細工されたパケットを送信することで、不適切なデータを表示させたり、クラッシュさせたり、無限ループに入らせたりする可能性があります。（CVE-2015-0261、CVE-2015-2153、CVE-2015-2154、CVE-2015-2155、CVE-2016-7922、CVE-2016-7923、CVE-2016-7924、CVE-2016-7925、CVE-2016-7926、CVE-2016-7927、CVE-2016-7928、CVE-2016-7929、CVE-2016-7930、CVE-2016-7931、CVE-2016-7932、CVE-2016-7933、CVE-2016-7934、CVE-2016-7935、CVE-2016-7936、CVE-2016-7937、CVE-2016-7938、CVE-2016-7939、CVE-2016-7940、CVE-2016-7973、CVE-2016-7974、CVE-2016-7975、CVE-2016-7983、CVE-2016-7984、CVE-2016-7985、CVE-2016-7986、CVE-2016-7992、CVE-2016-7993、CVE-2016-8574、CVE-2016-8575、CVE-2017-5202、CVE-2017-5203、CVE-2017-5204、CVE-2017-5205、CVE-2017-5341、CVE-2017-5342、CVE-2017-5482、CVE-2017-5483、CVE-2017-5484、CVE-2017-5485、CVE-2017-5486）Red Hatは、CVE-2016-7922、CVE-2016-7923、CVE-2016-7924、CVE-2016-7925、CVE-2016-7926、CVE-2016-7927、CVE-2016-7928、CVE-2016-7929、CVE-2016-7930、CVE-2016-7931、CVE-2016-7932、CVE-2016-7933、CVE-2016-7934、CVE-2016-7935、CVE-2016-7936、CVE-2016-7937、CVE-2016-7938、CVE-2016-7939、CVE-2016-7940、CVE-2016-7973、CVE-2016-7974、CVE-2016-7975、CVE-2016-7983、CVE-2016-7984、CVE-2016-7985、CVE-2016-7986、CVE-2016-7992、CVE-2016-7993、CVE-2016-8574、CVE-2016-8575、CVE-2017-5202、CVE-2017-5203、CVE-2017-5204、CVE-2017-5205、CVE-2017-5341、CVE-2017-5342、CVE-2017-5482、CVE-2017-5483、CVE-2017-5484、CVE-2017-5485、CVE-2017-5486を報告してくれたTcpdumpプロジェクトに感謝の意を表します。追加の変更：このリリースの変更に関する詳細については、「参照」セクションからリンクされているRed Hat Enterprise Linux 7.4リリースノートを参照してください。

According to the versions of the tcpdump package installed, the EulerOS installation on the remote host is affected by the following vulnerabilities :

  - Multiple out of bounds read and integer overflow     vulnerabilities were found in tcpdump affecting the     decoding of various protocols. An attacker could create     a crafted pcap file or send specially crafted packets     to the network segment where tcpdump is running in live     capture mode (without -w) which could cause it to     display incorrect data, crash or enter an infinite     loop. (CVE-2015-0261, CVE-2015-2153, CVE-2015-2154,     CVE-2015-2155, CVE-2016-7922, CVE-2016-7923,     CVE-2016-7924, CVE-2016-7925, CVE-2016-7926,     CVE-2016-7927, CVE-2016-7928, CVE-2016-7929,     CVE-2016-7930, CVE-2016-7931, CVE-2016-7932,     CVE-2016-7933, CVE-2016-7934, CVE-2016-7935,     CVE-2016-7936, CVE-2016-7937, CVE-2016-7938,     CVE-2016-7939, CVE-2016-7940, CVE-2016-7973,     CVE-2016-7974, CVE-2016-7975, CVE-2016-7983,     CVE-2016-7984, CVE-2016-7985, CVE-2016-7986,     CVE-2016-7992, CVE-2016-7993, CVE-2016-8574,     CVE-2016-8575, CVE-2017-5202, CVE-2017-5203,     CVE-2017-5204, CVE-2017-5205, CVE-2017-5341,     CVE-2017-5342, CVE-2017-5482, CVE-2017-5483,     CVE-2017-5484, CVE-2017-5485, CVE-2017-5486)

Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

An update of the tcpdump package has been released.

Multiple vulnerabilities have been discovered in tcpdump, a command-line network traffic analyzer. These vulnerabilities might result in denial of service or the execution of arbitrary code.

The remote Ubuntu 14.04 LTS / 16.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-3205-1 advisory.

    It was discovered that tcpdump incorrectly handled certain packets. A remote attacker could use this issue     to cause tcpdump to crash, resulting in a denial of service, or possibly execute arbitrary code.

    In the default installation, attackers would be isolated by the tcpdump AppArmor profile.

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

CVE-2016-7922

The AH parser in tcpdump before 4.9.0 has a buffer overflow in print-ah.c:ah_print().

CVE-2016-7923 The ARP parser in tcpdump before 4.9.0 has a buffer overflow in print-arp.c:arp_print().

CVE-2016-7924 The ATM parser in tcpdump before 4.9.0 has a buffer overflow in print-atm.c:oam_print().

CVE-2016-7925 The compressed SLIP parser in tcpdump before 4.9.0 has a buffer overflow in print-sl.c:sl_if_print().

CVE-2016-7927 The IEEE 802.11 parser in tcpdump before 4.9.0 has a buffer overflow in print-802_11.c:ieee802_11_radio_print().

Impact

An attacker can gain access to sensitive information. An attacker can also cause a denial of service (DoS) by way of a crafted pcap file or by sending specially crafted packets to the network segment where tcpdump is actively capturing network traffic. The tcpdump program does not use the protocol decoding subsystem, and is, therefore, not affected by these vulnerabilities when using the -w option to write raw packets to a pcap file for offline examination.

This update for tcpdump to version 4.9.0 and libpcap to version 1.8.1 fixes the several issues. These security issues were fixed in tcpdump :

  - CVE-2016-7922: The AH parser in tcpdump had a buffer     overflow in print-ah.c:ah_print() (bsc#1020940).

  - CVE-2016-7923: The ARP parser in tcpdump had a buffer     overflow in print-arp.c:arp_print() (bsc#1020940).

  - CVE-2016-7924: The ATM parser in tcpdump had a buffer     overflow in print-atm.c:oam_print() (bsc#1020940).

  - CVE-2016-7925: The compressed SLIP parser in tcpdump had     a buffer overflow in print-sl.c:sl_if_print()     (bsc#1020940).

  - CVE-2016-7926: The Ethernet parser in tcpdump had a     buffer overflow in print-ether.c:ethertype_print()     (bsc#1020940).

  - CVE-2016-7927: The IEEE 802.11 parser in tcpdump had a     buffer overflow in     print-802_11.c:ieee802_11_radio_print() (bsc#1020940).

  - CVE-2016-7928: The IPComp parser in tcpdump had a buffer     overflow in print-ipcomp.c:ipcomp_print() (bsc#1020940).

  - CVE-2016-7929: The Juniper PPPoE ATM parser in tcpdump     had a buffer overflow in     print-juniper.c:juniper_parse_header() (bsc#1020940).

  - CVE-2016-7930: The LLC/SNAP parser in tcpdump had a     buffer overflow in print-llc.c:llc_print()     (bsc#1020940).

  - CVE-2016-7931: The MPLS parser in tcpdump had a buffer     overflow in print-mpls.c:mpls_print() (bsc#1020940).

  - CVE-2016-7932: The PIM parser in tcpdump had a buffer     overflow in print-pim.c:pimv2_check_checksum()     (bsc#1020940).

  - CVE-2016-7933: The PPP parser in tcpdump had a buffer     overflow in print-ppp.c:ppp_hdlc_if_print()     (bsc#1020940).

  - CVE-2016-7934: The RTCP parser in tcpdump had a buffer     overflow in print-udp.c:rtcp_print() (bsc#1020940).

  - CVE-2016-7935: The RTP parser in tcpdump had a buffer     overflow in print-udp.c:rtp_print() (bsc#1020940).

  - CVE-2016-7936: The UDP parser in tcpdump had a buffer     overflow in print-udp.c:udp_print() (bsc#1020940).

  - CVE-2016-7937: The VAT parser in tcpdump had a buffer     overflow in print-udp.c:vat_print() (bsc#1020940).

  - CVE-2016-7938: The ZeroMQ parser in tcpdump had an     integer overflow in print-zeromq.c:zmtp1_print_frame()     (bsc#1020940).

  - CVE-2016-7939: The GRE parser in tcpdump had a buffer     overflow in print-gre.c, multiple functions     (bsc#1020940).

  - CVE-2016-7940: The STP parser in tcpdump had a buffer     overflow in print-stp.c, multiple functions     (bsc#1020940).

  - CVE-2016-7973: The AppleTalk parser in tcpdump had a     buffer overflow in print-atalk.c, multiple functions     (bsc#1020940).

  - CVE-2016-7974: The IP parser in tcpdump had a buffer     overflow in print-ip.c, multiple functions     (bsc#1020940).

  - CVE-2016-7975: The TCP parser in tcpdump had a buffer     overflow in print-tcp.c:tcp_print() (bsc#1020940).

  - CVE-2016-7983: The BOOTP parser in tcpdump had a buffer     overflow in print-bootp.c:bootp_print() (bsc#1020940).

  - CVE-2016-7984: The TFTP parser in tcpdump had a buffer     overflow in print-tftp.c:tftp_print() (bsc#1020940).

  - CVE-2016-7985: The CALM FAST parser in tcpdump had a     buffer overflow in print-calm-fast.c:calm_fast_print()     (bsc#1020940).

  - CVE-2016-7986: The GeoNetworking parser in tcpdump had a     buffer overflow in print-geonet.c, multiple functions     (bsc#1020940).

  - CVE-2016-7992: The Classical IP over ATM parser in     tcpdump had a buffer overflow in     print-cip.c:cip_if_print() (bsc#1020940).

  - CVE-2016-7993: A bug in util-print.c:relts_print() in     tcpdump could cause a buffer overflow in multiple     protocol parsers (DNS, DVMRP, HSRP, IGMP, lightweight     resolver protocol, PIM) (bsc#1020940).

  - CVE-2016-8574: The FRF.15 parser in tcpdump had a buffer     overflow in print-fr.c:frf15_print() (bsc#1020940).

  - CVE-2016-8575: The Q.933 parser in tcpdump had a buffer     overflow in print-fr.c:q933_print(), a different     vulnerability than CVE-2017-5482 (bsc#1020940).

  - CVE-2017-5202: The ISO CLNS parser in tcpdump had a     buffer overflow in print-isoclns.c:clnp_print()     (bsc#1020940).

  - CVE-2017-5203: The BOOTP parser in tcpdump had a buffer     overflow in print-bootp.c:bootp_print() (bsc#1020940).

  - CVE-2017-5204: The IPv6 parser in tcpdump had a buffer     overflow in print-ip6.c:ip6_print() (bsc#1020940).

  - CVE-2017-5205: The ISAKMP parser in tcpdump had a buffer     overflow in print-isakmp.c:ikev2_e_print()     (bsc#1020940).

  - CVE-2017-5341: The OTV parser in tcpdump had a buffer     overflow in print-otv.c:otv_print() (bsc#1020940).

  - CVE-2017-5342: In tcpdump a bug in multiple protocol     parsers (Geneve, GRE, NSH, OTV, VXLAN and VXLAN GPE)     could cause a buffer overflow in     print-ether.c:ether_print() (bsc#1020940).

  - CVE-2017-5482: The Q.933 parser in tcpdump had a buffer     overflow in print-fr.c:q933_print(), a different     vulnerability than CVE-2016-8575 (bsc#1020940).

  - CVE-2017-5483: The SNMP parser in tcpdump had a buffer     overflow in print-snmp.c:asn1_parse() (bsc#1020940).

  - CVE-2017-5484: The ATM parser in tcpdump had a buffer     overflow in print-atm.c:sig_print() (bsc#1020940).

  - CVE-2017-5485: The ISO CLNS parser in tcpdump had a     buffer overflow in addrtoname.c:lookup_nsap()     (bsc#1020940).

  - CVE-2017-5486: The ISO CLNS parser in tcpdump had a     buffer overflow in print-isoclns.c:clnp_print()     (bsc#1020940).

  - CVE-2015-3138: Fixed potential denial of service in     print-wb.c (bsc#927637).

  - CVE-2015-0261: Integer signedness error in the     mobility_opt_print function in the IPv6 mobility printer     in tcpdump allowed remote attackers to cause a denial of     service (out-of-bounds read and crash) or possibly     execute arbitrary code via a negative length value     (bsc#922220).

  - CVE-2015-2153: The rpki_rtr_pdu_print function in     print-rpki-rtr.c in the TCP printer in tcpdump allowed     remote attackers to cause a denial of service     (out-of-bounds read or write and crash) via a crafted     header length in an RPKI-RTR Protocol Data Unit (PDU)     (bsc#922221).

  - CVE-2015-2154: The osi_print_cksum function in     print-isoclns.c in the ethernet printer in tcpdump     allowed remote attackers to cause a denial of service     (out-of-bounds read and crash) via a crafted (1) length,     (2) offset, or (3) base pointer checksum value     (bsc#922222).

  - CVE-2015-2155: The force printer in tcpdump allowed     remote attackers to cause a denial of service (crash)     and possibly execute arbitrary code via unspecified     vectors (bsc#922223).

  - CVE-2014-8767: Integer underflow in the olsr_print     function in tcpdump 3.9.6 when in verbose mode, allowed     remote attackers to cause a denial of service (crash)     via a crafted length value in an OLSR frame     (bsc#905870).

  - CVE-2014-8768: Multiple Integer underflows in the     geonet_print function in tcpdump when run in verbose     mode, allowed remote attackers to cause a denial of     service (segmentation fault and crash) via a crafted     length value in a Geonet frame (bsc#905871).

  - CVE-2014-8769: tcpdump might have allowed remote     attackers to obtain sensitive information from memory or     cause a denial of service (packet loss or segmentation     fault) via a crafted Ad hoc On-Demand Distance Vector     (AODV) packet, which triggers an out-of-bounds memory     access (bsc#905872). These non-security issues were     fixed in tcpdump :

  - PPKI to Router Protocol: Fix Segmentation Faults and     other problems

  - RPKI to Router Protocol: print strings with fn_printn()

  - Added a short option '#', same as long option '--number'

  - nflog, mobile, forces, pptp, AODV, AHCP, IPv6, OSPFv4,     RPL, DHCPv6 enhancements/fixes

  - M3UA decode added.

  - Added bittok2str().

  - A number of unaligned access faults fixed

  - The -A flag does not consider CR to be printable anymore

  - fx.lebail took over coverity baby sitting

  - Default snapshot size increased to 256K for accomodate     USB captures These non-security issues were fixed in     libpcap :

  - Provide a -devel-static subpackage that contains the     static libraries and all the extra dependencies which     are not needed for dynamic linking.

  - Fix handling of packet count in the TPACKET_V3 inner     loop

  - Filter out duplicate looped back CAN frames.

  - Fix the handling of loopback filters for IPv6 packets.

  - Add a link-layer header type for RDS (IEC 62106) groups.

  - Handle all CAN captures with pcap-linux.c, in cooked     mode.

  - Removes the need for the 'host-endian' link-layer header     type.

  - Have separate DLTs for big-endian and host-endian     SocketCAN headers.

  - Properly check for sock_recv() errors.

  - Re-impose some of Winsock's limitations on sock_recv().

  - Replace sprintf() with pcap_snprintf().

  - Fix signature of pcap_stats_ex_remote().

  - Have rpcap_remoteact_getsock() return a SOCKET and     supply an 'is active' flag.

  - Clean up {DAG, Septel, Myricom SNF}-only builds.

  - pcap_create_interface() needs the interface name on     Linux.

  - Clean up hardware time stamp support: the 'any' device     does not support any time stamp types.

  - Recognize 802.1ad nested VLAN tag in vlan filter.

  - Support for filtering Geneve encapsulated packets.

  - Fix handling of zones for BPF on Solaris

  - Added bpf_filter1() with extensions

  - EBUSY can now be returned by SNFv3 code.

  - Don't crash on filters testing a non-existent link-layer     type field.

  - Fix sending in non-blocking mode on Linux with     memory-mapped capture.

  - Fix timestamps when reading pcap-ng files on big-endian     machines.

  - Fixes for byte order issues with NFLOG captures

  - Handle using cooked mode for DLT_NETLINK in     activate_new().

Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

ID	Name	Product	Family	Published	Updated	Severity
97695	SUSE SLES11セキュリティ更新プログラム：tcpdump（SUSE-SU-2017:0656-1）	Nessus	SuSE Local Security Checks	3/13/2017	1/19/2021	critical
102287	Oracle Linux 7：tcpdump（ELSA-2017-1871）	Nessus	Oracle Linux Local Security Checks	8/9/2017	10/22/2024	critical
103017	EulerOS 2.0 SP1 : tcpdump (EulerOS-SA-2017-1179)	Nessus	Huawei Local Security Checks	9/8/2017	1/6/2021	critical
121670	Photon OS 1.0: Tcpdump PHSA-2017-0004	Nessus	PhotonOS Local Security Checks	2/7/2019	7/23/2024	critical
96844	Debian DSA-3775-1 : tcpdump - security update	Nessus	Debian Local Security Checks	1/30/2017	1/11/2021	critical
97318	Ubuntu 14.04 LTS / 16.04 LTS : tcpdump vulnerabilities (USN-3205-1)	Nessus	Ubuntu Local Security Checks	2/22/2017	8/27/2024	critical
104308	F5 Networks BIG-IP : tcpdump vulnerabilities (K77384526)	Nessus	F5 Networks Local Security Checks	11/1/2017	1/4/2019	critical
103018	EulerOS 2.0 SP2 : tcpdump (EulerOS-SA-2017-1180)	Nessus	Huawei Local Security Checks	9/8/2017	1/6/2021	critical
99705	SUSE SLED12 / SLES12 Security Update : tcpdump, libpcap (SUSE-SU-2017:1110-1)	Nessus	SuSE Local Security Checks	4/27/2017	1/6/2021	critical

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