CVE-2015-8923

The process_extra function in libarchive before 3.2.0 uses the size field and a signed number in an offset, which allows remote attackers to cause a denial of service (crash) via a crafted zip file.

The process_extra function in libarchive before 3.2.0 uses the size field and a signed number in an offset, which allows remote attackers to cause a denial of service (crash) via a crafted zip file.

libarchive was updated to fix 20 security issues.

These security issues were fixed:

• CVE-2015-8918: Overlapping memcpy in CAB parser (bsc#985698).
• CVE-2015-8919: Heap out of bounds read in LHA/LZH parser (bsc#985697).
• CVE-2015-8920: Stack out of bounds read in ar parser (bsc#985675).
• CVE-2015-8921: Global out of bounds read in mtree parser (bsc#985682).
• CVE-2015-8922: Null pointer access in 7z parser (bsc#985685).
• CVE-2015-8923: Unclear crashes in ZIP parser (bsc#985703).
• CVE-2015-8924: Heap buffer read overflow in tar (bsc#985609).
• CVE-2015-8925: Unclear invalid memory read in mtree parser (bsc#985706).
• CVE-2015-8926: NULL pointer access in RAR parser (bsc#985704).
• CVE-2015-8928: Heap out of bounds read in mtree parser (bsc#985679).
• CVE-2015-8929: Memory leak in tar parser (bsc#985669).
• CVE-2015-8930: Endless loop in ISO parser (bsc#985700).
• CVE-2015-8931: Undefined behavior / signed integer overflow in mtree parser (bsc#985689).
• CVE-2015-8932: Compress handler left shifting larger than int size (bsc#985665).
• CVE-2015-8933: Undefined behavior / signed integer overflow in TAR parser (bsc#985688).
• CVE-2015-8934: Out of bounds read in RAR (bsc#985673).
• CVE-2016-4300: Heap buffer overflow vulnerability in the 7zip read_SubStreamsInfo (bsc#985832).
• CVE-2016-4301: Stack buffer overflow in the mtree parse_device (bsc#985826).
• CVE-2016-4302: Heap buffer overflow in the Rar decompression functionality (bsc#985835).
• CVE-2016-4809: Memory allocate error with symbolic links in cpio archives (bsc#984990).

Hanno Böck discovered that libarchive contained multiple security issues when processing certain malformed archive files. A remote attacker could use this issue to cause libarchive to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2015-8916, CVE-2015-8917 CVE-2015-8919, CVE-2015-8920, CVE-2015-8921, CVE-2015-8922, CVE-2015-8923, CVE-2015-8924, CVE-2015-8925, CVE-2015-8926, CVE-2015-8928, CVE-2015-8930, CVE-2015-8931, CVE-2015-8932, CVE-2015-8933, CVE-2015-8934, CVE-2016-5844)

Marcin "Icewall" Noga discovered that libarchive contained multiple security issues when processing certain malformed archive files. A remote attacker could use this issue to cause libarchive to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2016-4300, CVE-2016-4302)

It was discovered that libarchive incorrectly handled memory allocation with large cpio symlinks. A remote attacker could use this issue to possibly cause libarchive to crash, resulting in a denial of service. (CVE-2016-4809)