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CVE-2015-8923

18
FAUCET Score

CVE-2015-8923 describes a denial-of-service vulnerability in libarchive versions prior to 3.2.0, affecting products like Canonical and Novell. The flaw lies in the process_extra function, where a crafted zip file can cause a crash due to improper handling of size fields and signed offsets. This vulnerability carries a CVSS v3 score of 6.5 (Medium), indicating it can be exploited remotely with low attack complexity, requiring user interaction, and leading to high availability impact. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 3.1.901aCPE matchmatch criteria
cpe:2.3:a:libarchive:libarchive:*:*:*:*:*:*:*:*
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:*:*:*

CVSS Data

CVSS version used by this source: 3.0

6.5MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
2.88%
Probability of exploitation in next 30 days
EPSS Percentile
85.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0288 is in the 93rd percentile among its peer group of 26,234 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, 0.1 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 (1)

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-2015-8923Low

libarchive: Unclear crashes in ZIP 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
blog.fuzzing-project.org / 47-Many-invalid-memory-access-issues-in-libarchive.html
Third Party Advisory
github.com / libarchive/libarchive/issues/514
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/91309
ubuntu.com / usn/USN-3033-1
Third Party Advisory