bgpd in Quagga before 0.99.18 allows remote attackers to cause a denial of service (session reset) via a malformed AS_PATHLIMIT path attribute.

The remote Solaris system is missing necessary patches to address security updates :

  - bgpd in Quagga before 0.99.9 allows explicitly     configured BGP peers to cause a denial of service     (crash) via a malformed (1) OPEN message or (2) a     COMMUNITY attribute, which triggers a NULL pointer     dereference. NOTE: vector 2 only exists when debugging     is enabled. (CVE-2007-4826)

  - The BGP daemon (bgpd) in Quagga 0.99.11 and earlier     allows remote attackers to cause a denial of service     (crash) via an AS path containing ASN elements whose     string representation is longer than expected, which     triggers an assert error. (CVE-2009-1572)

  - The extended-community parser in bgpd in Quagga before     0.99.18 allows remote attackers to cause a denial of     service (NULL pointer dereference and application crash)     via a malformed Extended Communities attribute.
    (CVE-2010-1674)

  - bgpd in Quagga before 0.99.18 allows remote attackers to     cause a denial of service (session reset) via a     malformed AS_PATHLIMIT path attribute. (CVE-2010-1675)

  - Stack-based buffer overflow in the     bgp_route_refresh_receive function in bgp_packet.c in     bgpd in Quagga before 0.99.17 allows remote     authenticated users to cause a denial of service (daemon     crash) or possibly execute arbitrary code via a     malformed Outbound Route Filtering (ORF) record in a BGP     ROUTE-REFRESH (RR) message. (CVE-2010-2948)

  - bgpd in Quagga before 0.99.17 does not properly parse AS     paths, which allows remote attackers to cause a denial     of service (NULL pointer dereference and daemon crash)     via an unknown AS type in an AS path attribute in a BGP     UPDATE message. (CVE-2010-2949)

  - The OSPFv3 implementation in ospf6d in Quagga before     0.99.19 allows remote attackers to cause a denial of     service (out-of-bounds memory access and daemon crash)     via a Link State Update message with an invalid IPv6     prefix length. (CVE-2011-3323)

  - The ospf6_lsa_is_changed function in ospf6_lsa.c in the     OSPFv3 implementation in ospf6d in Quagga before 0.99.19     allows remote attackers to cause a denial of service     (assertion failure and daemon exit) via trailing zero     values in the Link State Advertisement (LSA) header list     of an IPv6 Database Description message. (CVE-2011-3324)

  - ospf_packet.c in ospfd in Quagga before 0.99.19 allows     remote attackers to cause a denial of service (daemon     crash) via (1) a 0x0a type field in an IPv4 packet     header or (2) a truncated IPv4 Hello packet.
    (CVE-2011-3325)

  - The ospf_flood function in ospf_flood.c in ospfd in     Quagga before 0.99.19 allows remote attackers to cause a     denial of service (daemon crash) via an invalid Link     State Advertisement (LSA) type in an IPv4 Link State     Update message. (CVE-2011-3326)

This security update of quagga fixes :

  - CVE-2010-1674: Direct BGP peers can send malformed     extended communities which lead to a NULL pointer     dereference.

  - CVE-2010-1675: A malformed AS_PATHLIMIT path attribute     will cause a session reset in Quagga. This malformed     package is forwarded by other routers and can be used to     take 'all' Quagga routers off the Internet with one     single announcement.

From Red Hat Security Advisory 2011:0406 :

Updated quagga packages that fix two security issues are now available for Red Hat Enterprise Linux 6.

The Red Hat Security Response Team has rated this update as having moderate security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section.

Quagga is a TCP/IP based routing software suite. The Quagga bgpd daemon implements the BGP (Border Gateway Protocol) routing protocol.

A denial of service flaw was found in the way the Quagga bgpd daemon processed certain route metrics information. A BGP message with a specially crafted path limit attribute would cause the bgpd daemon to reset its session with the peer through which this message was received. (CVE-2010-1675)

A NULL pointer dereference flaw was found in the way the Quagga bgpd daemon processed malformed route extended communities attributes. A configured BGP peer could crash bgpd on a target system via a specially crafted BGP message. (CVE-2010-1674)

Users of quagga should upgrade to these updated packages, which contain backported patches to correct these issues. After installing the updated packages, the bgpd daemon must be restarted for the update to take effect.

A denial of service flaw was found in the way the Quagga bgpd daemon processed certain route metrics information. A BGP message with a specially crafted path limit attribute would cause the bgpd daemon to reset its session with the peer through which this message was received. (CVE-2010-1675)

A NULL pointer dereference flaw was found in the way the Quagga bgpd daemon processed malformed route extended communities attributes. A configured BGP peer could crash bgpd on a target system via a specially crafted BGP message. (CVE-2010-1674)

After installing the updated packages, the bgpd daemon must be restarted for the update to take effect.

According to its self-reported version number, the installation of Quagga's BGP daemon listening on the remote host is affected by multiple denial of service vulnerabilities :

  - A denial of service vulnerability can be triggered by a     malformed AS_PATHLIMIT path attribute. (CVE-2010-1675)

  - A denial of service vulnerability can be triggered by a     malformed extended communities attribute. (CVE-2010-1674)

The remote host is affected by the vulnerability described in GLSA-201202-02 (Quagga: Multiple vulnerabilities)

    Multiple vulnerabilities have been discovered in Quagga. Please review       the CVE identifiers referenced below for details.
  Impact :

    A BGP peer could send a Route-Refresh message with specially crafted ORF       record, which can cause Quagga's bgpd to crash or possibly execute       arbitrary code with the privileges of the user running Quagga's bgpd; a       BGP update AS path request with unknown AS type, or malformed       AS-Pathlimit or Extended-Community attributes could lead to Denial of       Service (daemon crash), an error in bgpd when handling AS_PATH attributes       within UPDATE messages can       be exploited to cause a heap-based buffer overflow resulting in a crash       of the       daemon and disruption of IPv4 routing, two errors in ospf6d and ospfd can       each be exploited to crash the daemon and disrupt IP routing.
  Workaround :

    There is no known workaround at this time.

This security update of quagga fixes :

  - Direct BGP peers can send malformed extended communities     which lead to a NULL pointer dereference.
    (CVE-2010-1674)

  - A malformed AS_PATHLIMIT path attribute will cause a     session reset in Quagga. This malformed package is     forwarded by other routers and can be used to take 'all'     Quagga routers off the Internet with one single     announcement. (feature removed). (CVE-2010-1675)

  - CVE-2010-2948: CVSS v2 Base Score: 5.4     (AV:A/AC:M/Au:N/C:P/I:P/A:P): Buffer Errors (CWE-119)

  - CVE-2010-2949: CVSS v2 Base Score: 1.8     (AV:A/AC:H/Au:N/C:N/I:N/A:P)

- Bug #654603 - CVE-2010-1674 quagga: DoS (crash) by     processing malformed extended community attribute in a     route

  - Bug #654614 - CVE-2010-1675 quagga: BGP session reset by     processing BGP Update message with malformed AS-path     attributes

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

- Wed Mar 23 2011 Jiri Skala <jskala at redhat.com> -     0.99.18-1

    - fixes #689852 - CVE-2010-1674 CVE-2010-1675 quagga       various flaws

    - fixes #689763 - updated to latest upstream version       0.99.18

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

- Wed Mar 23 2011 Jiri Skala <jskala at redhat.com> -     0.99.18-1

    - fixes #689852 - CVE-2010-1674 CVE-2010-1675 quagga       various flaws

    - fixes #689763 - updated to latest upstream version       0.99.18

    - Tue Aug 31 2010 Jiri Skala <jskala at redhat.com> -       0.99.17-1

    - update to latest upstream

    - fixes #628981 - CVE-2010-2948 and CVE-2010-2949

    - Fri Jun 11 2010 Jiri Skala <jskala at redhat.com> -       0.99.15-3

    - fixes #602851 - ships PAM config file, even though PAM       is disabled

    - Tue Jan 26 2010 Jiri Skala <jskala at redhat.com> -       0.99.15-2

    - changes in spec file and init scritps (#226352)

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

Quagga developers report :

Quagga 0.99.18 has been released. This release fixes 2 denial of services in bgpd, which can be remotely triggered by malformed AS-Pathlimit or Extended-Community attributes. These issues have been assigned CVE-2010-1674 and CVE-2010-1675. Support for AS-Pathlimit has been removed with this release.

This security update of quagga fixes :

  - Direct BGP peers can send malformed extended communities     which lead to a NULL pointer dereference.
    (CVE-2010-1674)

  - A malformed AS_PATHLIMIT path attribute will cause a     session reset in Quagga. This malformed package is     forwarded by other routers and can be used to take 'all'     Quagga routers off the Internet with one single     announcement. (feature removed). (CVE-2010-1675)

This security update of quagga fixes :

  - Direct BGP peers can send malformed extended communities     which lead to a NULL pointer dereference.
    (CVE-2010-1674)

  - A malformed AS_PATHLIMIT path attribute will cause a     session reset in Quagga. This malformed package is     forwarded by other routers and can be used to take 'all'     Quagga routers off the Internet with one single     announcement. (feature removed). (CVE-2010-1675)

  - CVSS v2 Base Score: 5.4 (AV:A/AC:M/Au:N/C:P/I:P/A:P):
    Buffer Errors (CWE-119). (CVE-2010-2948)

  - CVSS v2 Base Score: 1.8 (AV:A/AC:H/Au:N/C:N/I:N/A:P).
    (CVE-2010-2949)

Updated quagga packages that fix two security issues are now available for Red Hat Enterprise Linux 6.

The Red Hat Security Response Team has rated this update as having moderate security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section.

Quagga is a TCP/IP based routing software suite. The Quagga bgpd daemon implements the BGP (Border Gateway Protocol) routing protocol.

A denial of service flaw was found in the way the Quagga bgpd daemon processed certain route metrics information. A BGP message with a specially crafted path limit attribute would cause the bgpd daemon to reset its session with the peer through which this message was received. (CVE-2010-1675)

A NULL pointer dereference flaw was found in the way the Quagga bgpd daemon processed malformed route extended communities attributes. A configured BGP peer could crash bgpd on a target system via a specially crafted BGP message. (CVE-2010-1674)

Users of quagga should upgrade to these updated packages, which contain backported patches to correct these issues. After installing the updated packages, the bgpd daemon must be restarted for the update to take effect.

It was discovered that Quagga incorrectly parsed certain malformed extended communities. A remote attacker could use this flaw to cause Quagga to crash, resulting in a denial of service. (CVE-2010-1674)

It was discovered that Quagga resets BGP sessions when encountering malformed AS_PATHLIMIT attributes. A remote attacker could use this flaw to disrupt BGP sessions, resulting in a denial of service. This update removes AS_PATHLIMIT support from Quagga. This issue only affected Ubuntu 8.04 LTS, 9.10, 10.04 LTS and 10.10. (CVE-2010-1675).

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

It has been discovered that the Quagga routing daemon contains two denial-of-service vulnerabilities in its BGP implementation :

  - CVE-2010-1674     A crafted Extended Communities attribute triggers a NULL     pointer dereference which causes the BGP daemon to     crash. The crafted attributes are not propagated by the     Internet core, so only explicitly configured direct     peers are able to exploit this vulnerability in typical     configurations.

  - CVE-2010-1675     The BGP daemon resets BGP sessions when it encounters     malformed AS_PATHLIMIT attributes, introducing a     distributed BGP session reset vulnerability which     disrupts packet forwarding. Such malformed attributes     are propagated by the Internet core, and exploitation of     this vulnerability is not restricted to directly     configured BGP peers.

This security update removes AS_PATHLIMIT processing from the BGP implementation, preserving the configuration statements for backwards compatibility. (Standardization of this BGP extension was abandoned long ago.)

ID	Name	Product	Family	Severity
80751	Oracle Solaris Third-Party Patch Update : quagga (multiple_denial_of_service_vulnerabilities4)	Nessus	Solaris Local Security Checks	medium
76006	openSUSE Security Update : quagga (openSUSE-SU-2011:0274-2)	Nessus	SuSE Local Security Checks	medium
75722	openSUSE Security Update : quagga (openSUSE-SU-2011:0274-1)	Nessus	SuSE Local Security Checks	medium
68242	Oracle Linux 6 : quagga (ELSA-2011-0406)	Nessus	Oracle Linux Local Security Checks	medium
61005	Scientific Linux Security Update : quagga on SL6.x i386/x86_64	Nessus	Scientific Linux Local Security Checks	medium
59789	Quagga < 0.99.18 BGPD Multiple Denial of Service Vulnerabilities	Nessus	Misc.	medium
58081	GLSA-201202-02 : Quagga: Multiple vulnerabilities	Nessus	Gentoo Local Security Checks	high
57249	SuSE 10 Security Update : quagga (ZYPP Patch Number 7406)	Nessus	SuSE Local Security Checks	medium
53796	openSUSE Security Update : quagga (openSUSE-SU-2011:0274-1)	Nessus	SuSE Local Security Checks	medium
53452	Fedora 15 : quagga-0.99.18-2.fc15 (2011-3990)	Nessus	Fedora Local Security Checks	medium
53366	Fedora 14 : quagga-0.99.18-1.fc14 (2011-3922)	Nessus	Fedora Local Security Checks	medium
53365	Fedora 13 : quagga-0.99.18-1.fc13 (2011-3916)	Nessus	Fedora Local Security Checks	medium
53266	FreeBSD : quagga -- two DoS vulnerabilities (b2a40507-5c88-11e0-9e85-00215af774f0)	Nessus	FreeBSD Local Security Checks	medium
53255	SuSE 10 Security Update : quagga (ZYPP Patch Number 7355)	Nessus	SuSE Local Security Checks	medium
53254	SuSE 11.1 Security Update : quagga (SAT Patch Number 4023)	Nessus	SuSE Local Security Checks	medium
53250	SuSE9 Security Update : quagga (YOU Patch Number 12685)	Nessus	SuSE Local Security Checks	medium
53245	RHEL 6 : quagga (RHSA-2011:0406)	Nessus	Red Hat Local Security Checks	medium
53219	Ubuntu 6.06 LTS / 8.04 LTS / 9.10 / 10.04 LTS / 10.10 : quagga vulnerabilities (USN-1095-1)	Nessus	Ubuntu Local Security Checks	medium
52741	Debian DSA-2197-1 : quagga - denial of service	Nessus	Debian Local Security Checks	medium

Detections

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