MEDIUM
CVE-2015-8923
CWE-20Published: September 20, 2016· Updated: Jun 17, 2026
6.5
CVSS v3.1
Official 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.
Technical Analysis
CVE-2015-8923 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.
Exploitation does not require any privileges, though user interaction (Required) is needed, which slightly reduces the risk of mass automated attacks.
A successful exploit results in availability disruption (denial of service), with a CVSS base score of 6.5.
CVSS v3.1 Vector Breakdown
Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionRequired
ScopeUnchanged
Impact
ConfidentialityNone
IntegrityNone
AvailabilityHigh
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Affected Vendors & Products
Canonical1 product(s)
ubuntu linux
libarchive1 product(s)
libarchive
novell3 product(s)
suse linux enterprise software development kitsuse linux enterprise desktopsuse linux enterprise server
Source: NVD CPE · 8 total CPE entries
Exploit & PoC Resources
NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.
Official Patches & Advisories
All References (22)
→
http://lists.opensuse.org/opensuse-security-announce/2016-07/msg00025.htmlThird Party Advisory
→
http://www.openwall.com/lists/oss-security/2016/06/17/2Third Party Advisory
→
http://www.openwall.com/lists/oss-security/2016/06/17/5Third Party Advisory
→
http://www.ubuntu.com/usn/USN-3033-1Third Party Advisory
→
→
http://lists.opensuse.org/opensuse-security-announce/2016-07/msg00025.htmlThird Party Advisory
→
http://www.openwall.com/lists/oss-security/2016/06/17/2Third Party Advisory
Quick Facts
CVE IDCVE-2015-8923
CVSS Score6.5 / 10
SeverityMEDIUM
WeaknessCWE-20
CISA KEVNo
Affected3 vendor(s)
PublishedSep 20, 2016
Related CVEs (CWE-20)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2015-8923 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.