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CVE-2015-8920

16
FAUCET Score

CVE-2015-8920 describes an out-of-bounds stack read vulnerability in the _ar_read_header function of libarchive versions prior to 3.2.0, affecting products like Canonical and Novell. This medium-severity vulnerability (CVSS 5.5) can lead to a denial of service if a user processes a specially crafted ar file. While the attack requires user interaction (UI:R), its complexity is low (AC:L), and it has a high impact on availability (A:H). There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
12.0CPE matchmatch criteria
cpe:2.3:a:novell:suse_linux_enterprise_software_development_kit:12.0:sp1:*:*:*:*:*:*
12.0CPE matchmatch criteria
cpe:2.3:o:novell:suse_linux_enterprise_desktop:12.0:sp1:*:*:*:*:*:*
12.0CPE matchmatch criteria
cpe:2.3:o:novell:suse_linux_enterprise_server:12.0:sp1:*:*:*:*:*:*
12.04CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:lts:*:*:*
14.04CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*

CVSS Data

CVSS version used by this source: 3.0

5.5MEDIUM

CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
1.92%
Probability of exploitation in next 30 days
EPSS Percentile
77.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0192 is in the 88th percentile among its peer group of 5,765 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: libarchive-0:2.8.3-7.el6_8
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: libarchive-0:3.1.2-10.el7_2
View patch

Vendor Advisories (1)

redhatCVE-2015-8920Low

libarchive: Stack out of bounds read in ar parser

Jun 17, 2016

References

lists.opensuse.org / opensuse-security-announce/2016-07/msg00025.html
Third Party Advisory
rhn.redhat.com / errata/RHSA-2016-1844.html
rhn.redhat.com / errata/RHSA-2016-1850.html
blog.fuzzing-project.org / 47-Many-invalid-memory-access-issues-in-libarchive.html
Third Party Advisory
github.com / libarchive/libarchive/issues/511
security.gentoo.org / glsa/201701-03
debian.org / security/2016/dsa-3657
openwall.com / lists/oss-security/2016/06/17/2
Third Party Advisory
openwall.com / lists/oss-security/2016/06/17/5
Third Party Advisory
oracle.com / technetwork/topics/security/linuxbulletinjul2016-3090544.html
securityfocus.com / bid/91301
ubuntu.com / usn/USN-3033-1
Third Party Advisory