CVE-2015-8923

Description

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.

Category

6.5
CVSS
Severity: Medium
CVSS 3.0 •
CVSS 2.0 •
EPSS 2.19% Top 20%
Vendor Advisory ubuntu.com Vendor Advisory redhat.com Vendor Advisory opensuse.org Vendor Advisory gentoo.org Vendor Advisory debian.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
http://www.ubuntu.com/usn/USN-3033-1 third party advisory vendor advisory
http://rhn.redhat.com/errata/RHSA-2016-1844.html vendor advisory
https://blog.fuzzing-project.org/47-Many-invalid-memory-access-issues-in-libarchive.html third party advisory
https://github.com/libarchive/libarchive/issues/514
http://www.oracle.com/technetwork/topics/security/linuxbulletinjul2016-3090544.html
http://lists.opensuse.org/opensuse-security-announce/2016-07/msg00025.html third party advisory vendor advisory
http://www.securityfocus.com/bid/91309 vdb entry
http://www.openwall.com/lists/oss-security/2016/06/17/2 third party advisory mailing list
https://security.gentoo.org/glsa/201701-03 vendor advisory
http://www.openwall.com/lists/oss-security/2016/06/17/5 third party advisory mailing list
http://www.debian.org/security/2016/dsa-3657 vendor advisory

Frequently Asked Questions

What is the severity of CVE-2015-8923?
CVE-2015-8923 has been scored as a medium severity vulnerability.
How to fix CVE-2015-8923?
To fix CVE-2015-8923, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2015-8923 being actively exploited in the wild?
It is possible that CVE-2015-8923 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~2% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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