CVE-2019-12900 — Out-of-bounds Write in Bzip2

CWE-787 — Out-of-bounds WriteCWE-1214CWE-190 — Integer Overflow or WraparoundCWE-822 — Untrusted Pointer Dereference24 documents12 sources
Severity
9.8CRITICALNVD
OSV7.5OSV6.5
EPSS
1.1%
top 21.82%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
7
Bzip Bzip2ClamavPython+4 more
Timeline
PublishedJun 19
Latest updateNov 14

Description

BZ2_decompress in decompress.c in bzip2 through 1.0.6 has an out-of-bounds write when there are many selectors.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HExploitability: 3.9 | Impact: 5.9

Affected Packages7 packages

▶Debianbzip/bzip2< 1.0.6-9.1+3
▶Ubuntubzip/bzip2< 1.0.6-8ubuntu0.1+2
▶NVDbzip/bzip21.0.6
▶NVDpython/python3.7.0 — 3.7.13+3
▶Debianclamav/clamav< 0.101.4+dfsg-1+3

Also affects: Freebsd 11.2, 11.3, 12.0, Debian Linux 8.0, Ubuntu Linux 12.04, 14.04, 16.04, 18.04, 19.04

Patches

Patch: gitlab.com ↗Patch: seclists.org ↗Patch: security.freebsd.org ↗

🔴Vulnerability Details

8
OSV
out-of-bounds write when there are many bzip2 selectors↗2025-11-14
▶
GHSA
GHSA-j686-6fc2-2525: BZ2_decompress in decompress↗2022-05-24
▶
OSV
clamav vulnerabilities↗2019-10-03
▶
OSV
clamav vulnerabilities↗2019-10-02
▶
OSV
bzip2 vulnerabilities↗2019-06-26
▶

📋Vendor Advisories

10
Red Hat
bzip2: bzip2: Data integrity error when decompressing (with data integrity tests fail).↗2024-11-15
▶
Oracle
Oracle Oracle Database Server Risk Matrix: Core RDBMS (bzip2) — CVE-2019-12900↗2020-10-15
▶
Ubuntu
ClamAV vulnerabilities↗2019-10-03
▶
Ubuntu
ClamAV vulnerabilities↗2019-10-02
▶
BSD
FreeBSD-SA-19:18.bzip2: Multiple vulnerabilities in bzip2↗2019-08-06
▶

📄Research Papers

1
arXiv
LibAM: An Area Matching Framework for Detecting Third-party Libraries in Binaries↗2023-09-12
▶

💬Community

4
Bugzilla
CVE-2019-12900 bzip2: out-of-bounds write in function BZ2_decompress [fedora-all]↗2019-06-27
▶
Bugzilla
bzip2: out-of-bounds write in function BZ2_decompress↗2019-06-27
▶
Bugzilla
CVE-2019-7663 libtiff: integer overflow in libtiff/tif_dirwrite.c resulting in an invalid pointer dereference↗2019-02-15
▶
Bugzilla
bzip2: index out of bounds [@BZ2_decompress]↗2016-08-15
▶