In ZZIPlib 0.13.67, there is a memory alignment error and bus error in the __zzip_fetch_disk_trailer function of zzip/zip.c. Remote attackers could leverage this vulnerability to cause a denial of service via a crafted zip file.

Several issues have been fixed in zziplib, a library providing read access on ZIP-archives. They are basically all related to invalid memory access and resulting crash or memory leak.

For Debian 8 'Jessie', these problems have been fixed in version 0.13.62-3+deb8u2.

We recommend that you upgrade your zziplib packages.

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

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

  - An issue was discovered in ZZIPlib through 0.13.69.
    There is a memory leak triggered in the function
    __zzip_parse_root_directory in zip.c, which will lead     to a denial of service attack.(CVE-2018-16548)

  - Heap-based buffer overflow in the __zzip_get32 function     in fetch.c in zziplib 0.13.62 allows remote attackers     to cause a denial of service (crash) via a crafted ZIP     file.(CVE-2017-5974)

  - Heap-based buffer overflow in the __zzip_get64 function     in fetch.c in zziplib 0.13.62 allows remote attackers     to cause a denial of service (crash) via a crafted ZIP     file.(CVE-2017-5975)

  - Heap-based buffer overflow in the     zzip_mem_entry_extra_block function in memdisk.c in     zziplib 0.13.62 allows remote attackers to cause a     denial of service (crash) via a crafted ZIP     file.(CVE-2017-5976)

  - In ZZIPlib 0.13.67, there is a bus error caused by     loading of a misaligned address (when handling     disk64_trailer local entries) in
    __zzip_fetch_disk_trailer (zzip/zip.c). Remote     attackers could leverage this vulnerability to cause a     denial of service via a crafted zip     file.(CVE-2018-6541)

  - In ZZIPlib 0.13.67, there is a bus error caused by     loading of a misaligned address in the     zzip_disk_findfirst function of zzip/mmapped.c. Remote     attackers could leverage this vulnerability to cause a     denial of service via a crafted zip     file.(CVE-2018-6540)

  - In ZZIPlib 0.13.67, there is a memory alignment error     and bus error in the __zzip_fetch_disk_trailer function     of zzip/zip.c. Remote attackers could leverage this     vulnerability to cause a denial of service via a     crafted zip file.(CVE-2018-6484)

  - In ZZIPlib 0.13.67, there is a segmentation fault     caused by invalid memory access in the zzip_disk_fread     function (zzip/mmapped.c) because the size variable is     not validated against the amount of file->stored     data.(CVE-2018-6381)

  - In ZZIPlib 0.13.68, there is an uncontrolled memory     allocation and a crash in the
    __zzip_parse_root_directory function of zzip/zip.c.
    Remote attackers could leverage this vulnerability to     cause a denial of service via a crafted zip     file.(CVE-2018-6869)

  - seeko.c in zziplib 0.13.62 allows remote attackers to     cause a denial of service (assertion failure and crash)     via a crafted ZIP file.(CVE-2017-5981)

  - The prescan_entry function in fseeko.c in zziplib     0.13.62 allows remote attackers to cause a denial of     service (NULL pointer dereference and crash) via a     crafted ZIP file.(CVE-2017-5979)

  - The zzip_mem_entry_extra_block function in memdisk.c in     zziplib 0.13.62 allows remote attackers to cause a     denial of service (invalid memory read and crash) via a     crafted ZIP file.(CVE-2017-5977)

  - The zzip_mem_entry_new function in memdisk.c in zziplib     0.13.62 allows remote attackers to cause a denial of     service (out-of-bounds read and crash) via a crafted     ZIP file.(CVE-2017-5978)

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.

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

  - The zziplib is a lightweight library to easily extract     data from zip files.Security Fix(es):An issue was     discovered in ZZIPlib through 0.13.69. There is a     memory leak triggered in the function
    __zzip_parse_root_directory in zip.c, which will lead     to a denial of service attack.(CVE-2018-16548)In     ZZIPlib 0.13.67, there is a segmentation fault caused     by invalid memory access in the zzip_disk_fread     function (zzip/mmapped.c) because the size variable is     not validated against the amount of file->stored     data.(CVE-2018-6381)In ZZIPlib 0.13.67, there is a     memory alignment error and bus error in the
    __zzip_fetch_disk_trailer function of zzip/zip.c.
    Remote attackers could leverage this vulnerability to     cause a denial of service via a crafted zip     file.(CVE-2018-6484)In ZZIPlib 0.13.67, there is a bus     error caused by loading of a misaligned address in the     zzip_disk_findfirst function of zzip/mmapped.c. Remote     attackers could leverage this vulnerability to cause a     denial of service via a crafted zip     file.(CVE-2018-6540)In ZZIPlib 0.13.67, there is a bus     error caused by loading of a misaligned address (when     handling disk64_trailer local entries) in
    __zzip_fetch_disk_trailer (zzip/zip.c). Remote     attackers could leverage this vulnerability to cause a     denial of service via a crafted zip     file.(CVE-2018-6541)In ZZIPlib 0.13.68, there is an     uncontrolled memory allocation and a crash in the
    __zzip_parse_root_directory function of zzip/zip.c.
    Remote attackers could leverage this vulnerability to     cause a denial of service via a crafted zip     file.(CVE-2018-6869)The prescan_entry function in     fseeko.c in zziplib 0.13.62 allows remote attackers to     cause a denial of service (NULL pointer dereference and     crash) via a crafted ZIP file.(CVE-2017-5979)seeko.c in     zziplib 0.13.62 allows remote attackers to cause a     denial of service (assertion failure and crash) via a     crafted ZIP file.(CVE-2017-5981)The zzip_mem_entry_new     function in memdisk.c in zziplib 0.13.62 allows remote     attackers to cause a denial of service (out-of-bounds     read and crash) via a crafted ZIP     file.(CVE-2017-5978)Heap-based buffer overflow in the
    __zzip_get32 function in fetch.c in zziplib 0.13.62     allows remote attackers to cause a denial of service     (crash) via a crafted ZIP     file.(CVE-2017-5974)Heap-based buffer overflow in the     zzip_mem_entry_extra_block function in memdisk.c in     zziplib 0.13.62 allows remote attackers to cause a     denial of service (crash) via a crafted ZIP     file.(CVE-2017-5976)Heap-based buffer overflow in the
    __zzip_get64 function in fetch.c in zziplib 0.13.62     allows remote attackers to cause a denial of service     (crash) via a crafted ZIP file.(CVE-2017-5975)The     zzip_mem_entry_extra_block function in memdisk.c in     zziplib 0.13.62 allows remote attackers to cause a     denial of service (invalid memory read and crash) via a     crafted ZIP file.(CVE-2017-5977)

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.

NIST reports (by search in the range 2017/01/01 - 2018/07/06) :

17 security fixes in this release :

- Heap-based buffer overflow in the __zzip_get32 function in fetch.c.

- Heap-based buffer overflow in the __zzip_get64 function in fetch.c.

- Heap-based buffer overflow in the zzip_mem_entry_extra_block function in memdisk.c.

- The zzip_mem_entry_new function in memdisk.c allows remote attackers to cause a denial of service (out-of-bounds read and crash) via a crafted ZIP file.

- The prescan_entry function in fseeko.c allows remote attackers to cause a denial of service (NULL pointer dereference and crash) via crafted ZIP file.

- The zzip_mem_entry_new function in memdisk.c cause a NULL pointer dereference and crash via a crafted ZIP file.

- seeko.c cause a denial of service (assertion failure and crash) via a crafted ZIP file.

- A segmentation fault caused by invalid memory access in the zzip_disk_fread function because the size variable is not validated against the amount of file->stored data.

- A memory alignment error and bus error in the
__zzip_fetch_disk_trailer function of zzip/zip.c.

- A bus error caused by loading of a misaligned address in the zzip_disk_findfirst function.

- An uncontrolled memory allocation and a crash in the
__zzip_parse_root_directory function.

- An invalid memory address dereference was discovered in zzip_disk_fread in mmapped.c.

- A memory leak triggered in the function zzip_mem_disk_new in memdisk.c.

It was discovered that zziplib incorrectly handled certain malformed ZIP files. If a user or automated system were tricked into opening a specially crafted ZIP file, a remote attacker could cause zziplib to crash, resulting in a denial of service, or possibly execute arbitrary code.

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.

This update for zziplib fixes the following issues: Version update to 0.13.67 contains lots of bug- and security fixes.

  - If an extension block is too small to hold an extension,     do not use the information therein.

  - CVE-2018-6540: If the End of central directory record     (EOCD) contains an Offset of start of central directory     which is beyond the end of the file, reject the file.
    (bsc#1079096)

  - CVE-2018-6484: Reject the ZIP file and report it as     corrupt if the size of the central directory and/or the     offset of start of central directory point beyond the     end of the ZIP file. (bsc#1078701)

  - CVE-2018-6381: If a file is uncompressed, compressed and     uncompressed sizes should be identical. (bsc#1078497)

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.

This update for zziplib to 0.13.67 contains multiple bug and security fixes :

  - If an extension block is too small to hold an extension,     do not use the information therein.

  - CVE-2018-6540: If the End of central directory record     (EOCD) contains an Offset of start of central directory     which is beyond the end of the file, reject the file.
    (bsc#1079096)

  - CVE-2018-6484: Reject the ZIP file and report it as     corrupt if the size of the central directory and/or the     offset of start of central directory point beyond the     end of the ZIP file. (bsc#1078701)

  - CVE-2018-6381: If a file is uncompressed, compressed and     uncompressed sizes should be identical. (bsc#1078497)

This update was imported from the SUSE:SLE-12:Update update project.

Security fix for CVE-2018-6869, CVE-2018-6484

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

ID	Name	Product	Family	Severity
137861	Debian DLA-2258-1 : zziplib security update	Nessus	Debian Local Security Checks	medium
132220	EulerOS 2.0 SP3 : zziplib (EulerOS-SA-2019-2685)	Nessus	Huawei Local Security Checks	medium
131631	EulerOS 2.0 SP2 : zziplib (EulerOS-SA-2019-2478)	Nessus	Huawei Local Security Checks	medium
110969	FreeBSD : zziplib - multiple vulnerabilities (7764b219-8148-11e8-aa4d-000e0cd7b374)	Nessus	FreeBSD Local Security Checks	medium
110921	Ubuntu 14.04 LTS / 16.04 LTS / 18.04 LTS : zziplib vulnerabilities (USN-3699-1)	Nessus	Ubuntu Local Security Checks	medium
107054	SUSE SLED12 Security Update : zziplib (SUSE-SU-2018:0548-1)	Nessus	SuSE Local Security Checks	medium
107049	openSUSE Security Update : zziplib (openSUSE-2018-215)	Nessus	SuSE Local Security Checks	medium
106911	Fedora 27 : zziplib (2018-8d544ee879)	Nessus	Fedora Local Security Checks	medium

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CVE-2018-6484

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