CVE-2018-8098 — Integer Overflow or Wraparound in Libgit2

CWE-190 — Integer Overflow or WraparoundCWE-125 — Out-of-bounds Read10 documents8 sources
Severity
6.5MEDIUMNVD
EPSS
0.7%
top 27.00%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
3
Libgit2Debian Libgit2Debian Linux
Timeline
PublishedMar 14
Latest updateMay 12

Description

Integer overflow in the index.c:read_entry() function while decompressing a compressed prefix length in libgit2 before v0.26.2 allows an attacker to cause a denial of service (out-of-bounds read) via a crafted repository index file.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:HExploitability: 2.8 | Impact: 3.6

Affected Packages3 packages

▶debiandebian/libgit2< libgit2 0.27.0+dfsg.1-0.6 (bookworm)
▶NVDlibgit2/libgit2< 0.26.2
▶Debianlibgit2/libgit2< 0.27.0+dfsg.1-0.6+3

Also affects: Debian Linux 9.0

Patches

Patch: github.com ↗Patch: github.com ↗Patch: libgit2.github.com ↗

🔴Vulnerability Details

3
GHSA
GHSA-m334-hpp6-wjh3: Integer overflow in the index↗2022-05-12
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OSV
CVE-2018-8098: Integer overflow in the index↗2018-03-14
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CVEList
CVE-2018-8098: Integer overflow in the index↗2018-03-14
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💥Exploits & PoCs

1
Exploit-DB
DiskBoss Enterprise 8.8.16 - Remote Buffer Overflow↗2018-01-10
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📋Vendor Advisories

2
Red Hat
libgit2: denial of service (DoS) via crafted repository index files↗2018-03-08
▶
Debian
CVE-2018-8098: libgit2 - Integer overflow in the index.c:read_entry() function while decompressing a comp...↗2018
▶

💬Community

3
Bugzilla
CVE-2018-8099 CVE-2018-8098 libgit2: denial of service (DoS) via crafted repository index files [fedora-all]↗2018-03-12
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Bugzilla
CVE-2018-8099 CVE-2018-8098 libgit2: denial of service (DoS) via crafted repository index files [epel-all]↗2018-03-12
▶
Bugzilla
CVE-2018-8099 CVE-2018-8098 libgit2: denial of service (DoS) via crafted repository index files↗2018-03-12
▶