CVE-2016-8568

The git_commit_message function in oid.c in libgit2 before 0.24.3 allows remote attackers to cause a denial of service (out-of-bounds read) via a cat-file command with a crafted object file.

Published: 2017-02-03 Last update: 2026-05-13 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2016-8568 is rated Moderate Risk (50.5/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 1.92%). EPSS rose +1.49% over the last day, indicating growing attacker interest. Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2016-8568

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.43% 1.92% +1.49%
2 2026-05-27 0.47% 0.43% -0.04%
3 2026-03-11 — 0.47% —

Full EPSS history (16 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2016-8568

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
5.5 3.0 MEDIUM
CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H Click to expand
Attack vector (AV:L)
They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:R)
A real person has to do something—click, install, enable—otherwise it doesn’t land.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 1.8 3.6 [email protected]
4.3 2.0 MEDIUM
AV:N/AC:M/Au:N/C:N/I:N/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:M)
Exploitation needs some favorable conditions, but not exceptional ones.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:P)
Partial availability impact.
 8.6 2.9 [email protected]

Weakness enumeration for CVE-2016-8568

OS Trackers for CVE-2016-8568

vendor priority summary link
alpine — CVE-2016-8568: 4 source package rows (libgit2, libgit2-1.0, libgit2-1.1, libgit2-1.5); 12 state rows across 9 repos (3.10-main, 3.11-main, 3.17-community, 3.18-community, 3.19-community, 3.20-community, 3.21-community, 3.22-community, edge-community); fixed 12, open 0. https://security.alpinelinux.org/vuln/CVE-2016-8568
debian not yet assigned CVE-2016-8568 not yet assigned priority: Debian including 2 source packages (cargo, libgit2), 7 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 7. https://security-tracker.debian.org/tracker/CVE-2016-8568
suse medium CVE-2016-8568 severity moderate: SUSE including 28 source package names (libgit2-1_3-1.3.0-150400.1.6, libgit2-1_3-1.3.0-150400.3.6.1, …), 33 product×package rows across 18 product lines (SUSE Linux Enterprise Module for Development Tools 15, SUSE Linux Enterprise Module for Development Tools 15 SP1, … (18 product lines)): Fixed 33. https://www.suse.com/security/cve/CVE-2016-8568/
ubuntu medium CVE-2016-8568 medium priority: Ubuntu including 1 source packages (libgit2), 16 status rows across 16 suites (artful, bionic, cosmic, disco, eoan, focal, groovy, hirsute, impish, jammy, precise, trusty, upstream, xenial, yakkety, zesty): not-affected 9, ignored 3, released 3, DNE 1. https://ubuntu.com/security/CVE-2016-8568

Affected software / configurations for CVE-2016-8568

Vendor Product Version Raw CPE
fedoraproject fedora 23 cpe:2.3:o:fedoraproject:fedora:23:*:*:*:*:*:*:*
fedoraproject fedora 24 cpe:2.3:o:fedoraproject:fedora:24:*:*:*:*:*:*:*
fedoraproject fedora 25 cpe:2.3:o:fedoraproject:fedora:25:*:*:*:*:*:*:*
opensuse leap 42.1 cpe:2.3:o:opensuse:leap:42.1:*:*:*:*:*:*:*
opensuse leap 42.2 cpe:2.3:o:opensuse:leap:42.2:*:*:*:*:*:*:*
opensuse opensuse 13.2 cpe:2.3:o:opensuse:opensuse:13.2:*:*:*:*:*:*:*
suse linux_enterprise 12.0 cpe:2.3:o:suse:linux_enterprise:12.0:*:*:*:*:*:*:*
libgit2_project libgit2 <= 0.24.2 cpe:2.3:a:libgit2_project:libgit2:*:*:*:*:*:*:*:*

References for CVE-2016-8568

URL Tags
http://lists.opensuse.org/opensuse-updates/2016-12/msg00075.html Third Party Advisory
http://lists.opensuse.org/opensuse-updates/2017-01/msg00103.html Third Party Advisory
http://lists.opensuse.org/opensuse-updates/2017-01/msg00110.html Third Party Advisory
http://lists.opensuse.org/opensuse-updates/2017-01/msg00114.html Third Party Advisory
http://www.openwall.com/lists/oss-security/2016/10/08/7 Mailing List Patch Third Party Advisory
http://www.securityfocus.com/bid/93466 Third Party Advisory VDB Entry
https://bugzilla.redhat.com/show_bug.cgi?id=1383211 Issue Tracking
https://github.com/libgit2/libgit2/issues/3936 Issue Tracking Patch Third Party Advisory
https://github.com/libgit2/libgit2/releases/tag/v0.24.3 Issue Tracking Patch Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4E77DG5KGQ7L34U75QY7O6NIPKZNQHQJ/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/X3JBSNJAXP7JA3TGE2NPNRTD77JXFG4E/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XVUEIG6EESZB6BRU2IE3F5NRUEHMAEKC/
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