CVE-2015-8923: canonical ubuntu_linux Improper Input Validation
CVSS: 6.5v3.0MediumModified
AliasesUBUNTU-CVE-2015-8923DEBIAN-CVE-2015-8923
Published 20-09-2016Last modified 06-08-2024
Vulnerability summary
CVE-2015-8923 is a medium (CVSS 6.5) Improper Input Validation vulnerability in canonical ubuntu_linux. EPSS estimates a 2.88% chance of exploitation in the next 30 days, higher than 86.6% of scored vulnerabilities.
CVSS score
6.5/10
010
Medium · v3.0 (NVD)EPSS score
2.88%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Advisory lineage
Upstream 0 · Downstream 5 · Related 2Timeline
- 20-09-2016PublishedVulnerability first disclosed.
- 06-08-2024Last modifiedVulnerability information updated.
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.
CVSS metrics
4 scores · 3 sources · 2 versionsMedium 6.5Preferred score · NVD (NIST)
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:HSourcesAll 3 agree
- OSV · UbuntuEcosystem advisory · calculated6.5MediumCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
- OSV · DebianEcosystem advisory · calculated6.5MediumCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Medium 4.3Preferred score · NVD (NIST)
AV:N/AC:M/Au:N/C:N/I:N/A:PSourcesSingle source
EPSS trend
Probability
2.88%
Chance of exploitation in the next 30 days
Percentile
87%
Versus all other CVEs
30-day change
0.00 pp
From 2.88% on 18-09-2026
18-09-202618-10-2026
EPSS score2.88%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Novell3 products
Canonical1 product
- ubuntu_linuxEOL12.04 | 14.04 | 15.10 | 16.04
Debian1 product
- libarchive< 3.2.0-2
Libarchive1 product
- libarchive≤ 3.1.901a
Ubuntu1 product
- libarchive< 3.1.2-7ubuntu2.3 | < 3.1.2-11ubuntu0.16.04.2
5 vendors · 7 products
References
15 links- blog.fuzzing-project.org/47-Many-invalid-memory-access-issues-in-libarchive.htmlX Refsource MISCThird Party Advisory
- github.com/libarchive/libarchive/issues/514X Refsource CONFIRM
- www.oracle.com/technetwork/topics/security/linuxbulletinjul2016-3090544.htmlX Refsource CONFIRM
- lists.opensuse.org/opensuse-security-announce/2016-07/msg00025.htmlVendor AdvisoryX Refsource SUSEThird Party Advisory
