Improper input validation in Libarchive
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.
Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)
EPSS: 0.022 (84.8th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.
Affected products
- Libarchive
- Novell Suse_linux_enterprise_desktop — versions 12.0
- Novell Suse_linux_enterprise_server — versions 12.0
- Novell Suse_linux_enterprise_software_development_kit — versions 12.0
- Canonical Ubuntu_linux — versions 12.04, 14.04, 15.10
- N/a — versions n/a
Weakness classification (CWE)
Public proof-of-concept exploits
References
- USN-3033-1 (x_refsource_UBUNTU, vendor-advisory, Third Party Advisory)
- RHSA-2016:1844 (x_refsource_REDHAT, vendor-advisory)
- cve@mitre.org (Third Party Advisory, x_refsource_MISC)
- cve@mitre.org (x_refsource_CONFIRM)
- cve@mitre.org (x_refsource_CONFIRM)
- SUSE-SU-2016:1909 (vendor-advisory, Third Party Advisory, x_refsource_SUSE)
- 91309 (vdb-entry, x_refsource_BID)
- [oss-security] 20160617 Many invalid memory access issues in libarchive (mailing-list, x_refsource_MLIST, Third Party Advisory)
- GLSA-201701-03 (vendor-advisory, x_refsource_GENTOO)
- [oss-security] 20160617 Re: Many invalid memory access issues in libarchive (mailing-list, x_refsource_MLIST, Third Party Advisory)
Frequently asked questions
- What is CVE-2015-8923?
- CVE-2015-8923 is a medium-severity vulnerability in Libarchive, classified under Improper Input Validation. CVSS score: 6.5/10. Published 2016-09-20.
- How severe is CVE-2015-8923?
- Medium severity. CVSS v3 base score is 6.5 out of 10.
- Is CVE-2015-8923 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.