CVE-2019-12900

Name: CVE-2019-12900
Creator: NVD / NIST
Published: 2019-06-19T23:15:09.91+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 8.04%

Last modified Jun 17, 2026

CVE-2019-12900 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. BZ2_decompress in decompress.c in bzip2 through 1.0.6 has an out-of-bounds write when there are many selectors.. EPSS estimates a 8.04% chance of exploitation in the next 30 days.

Description

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

Metrics

CVSS 3.1

9.8/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

8.04%

94.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Bzip	Bzip2	<= 1.0.6
Debian	Debian Linux	8.0
Opensuse	Leap	15.0
Opensuse	Leap	15.1
Canonical	Ubuntu Linux	12.04
Canonical	Ubuntu Linux	14.04
Canonical	Ubuntu Linux	16.04
Canonical	Ubuntu Linux	18.04
Canonical	Ubuntu Linux	19.04
Freebsd	Freebsd	11.2
Freebsd	Freebsd	11.3
Freebsd	Freebsd	12.0
Python	Python	>= 3.7.0, < 3.7.13
Python	Python	>= 3.8.0, < 3.8.13
Python	Python	>= 3.9.0, < 3.9.11
Python	Python	>= 3.10.0, < 3.10.3

References

http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00040.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2019-08/msg00050.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00078.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2019-12/msg00000.htmlMailing List, Third Party Advisory
http://packetstormsecurity.com/files/153644/Slackware-Security-Advisory-bzip2-Updates.htmlThird Party Advisory, VDB Entry
http://packetstormsecurity.com/files/153957/FreeBSD-Security-Advisory-FreeBSD-SA-19-18.bzip2.htmlThird Party Advisory, VDB Entry
https://gitlab.com/federicomenaquintero/bzip2/commit/74de1e2e6ffc9d51ef9824db71a8ffee5962cdbcPatch, Vendor Advisory
https://lists.apache.org/thread.html/ra0adb9653c7de9539b93cc8434143b655f753b9f60580ff260becb2b%40%3Cusers.kafka.apache.org%3E
https://lists.apache.org/thread.html/rce8cd8c30f60604b580ea01bebda8a671a25c9a1629f409fc24e7774%40%3Cuser.flink.apache.org%3E
https://lists.apache.org/thread.html/rda98305669476c4d90cc8527c4deda7e449019dd1fe9936b56671dd4%40%3Cuser.flink.apache.org%3E
https://lists.debian.org/debian-lts-announce/2019/06/msg00021.htmlMailing List, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2019/07/msg00014.htmlMailing List, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2019/10/msg00012.htmlMailing List, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2019/10/msg00018.htmlMailing List, Third Party Advisory
https://seclists.org/bugtraq/2019/Aug/4Mailing List, Patch, Third Party Advisory
https://seclists.org/bugtraq/2019/Jul/22Mailing List, Third Party Advisory
https://security.FreeBSD.org/advisories/FreeBSD-SA-19:18.bzip2.ascPatch, Third Party Advisory
https://support.f5.com/csp/article/K68713584?utm_source=f5support&amp%3Butm_medium=RSS
https://usn.ubuntu.com/4038-1/Third Party Advisory
https://usn.ubuntu.com/4038-2/Third Party Advisory
https://usn.ubuntu.com/4146-1/Third Party Advisory
https://usn.ubuntu.com/4146-2/Third Party Advisory
https://www.oracle.com/security-alerts/cpuoct2020.htmlPatch, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00040.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2019-08/msg00050.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00078.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2019-12/msg00000.htmlMailing List, Third Party Advisory
http://packetstormsecurity.com/files/153644/Slackware-Security-Advisory-bzip2-Updates.htmlThird Party Advisory, VDB Entry
http://packetstormsecurity.com/files/153957/FreeBSD-Security-Advisory-FreeBSD-SA-19-18.bzip2.htmlThird Party Advisory, VDB Entry
https://gitlab.com/federicomenaquintero/bzip2/commit/74de1e2e6ffc9d51ef9824db71a8ffee5962cdbcPatch, Vendor Advisory
https://lists.apache.org/thread.html/ra0adb9653c7de9539b93cc8434143b655f753b9f60580ff260becb2b%40%3Cusers.kafka.apache.org%3E
https://lists.apache.org/thread.html/rce8cd8c30f60604b580ea01bebda8a671a25c9a1629f409fc24e7774%40%3Cuser.flink.apache.org%3E
https://lists.apache.org/thread.html/rda98305669476c4d90cc8527c4deda7e449019dd1fe9936b56671dd4%40%3Cuser.flink.apache.org%3E
https://lists.debian.org/debian-lts-announce/2019/06/msg00021.htmlMailing List, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2019/07/msg00014.htmlMailing List, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2019/10/msg00012.htmlMailing List, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2019/10/msg00018.htmlMailing List, Third Party Advisory
https://seclists.org/bugtraq/2019/Aug/4Mailing List, Patch, Third Party Advisory
https://seclists.org/bugtraq/2019/Jul/22Mailing List, Third Party Advisory
https://security.FreeBSD.org/advisories/FreeBSD-SA-19:18.bzip2.ascPatch, Third Party Advisory
https://support.f5.com/csp/article/K68713584?utm_source=f5support&amp%3Butm_medium=RSS
https://usn.ubuntu.com/4038-1/Third Party Advisory
https://usn.ubuntu.com/4038-2/Third Party Advisory
https://usn.ubuntu.com/4146-1/Third Party Advisory
https://usn.ubuntu.com/4146-2/Third Party Advisory
https://www.oracle.com/security-alerts/cpuoct2020.htmlPatch, Third Party Advisory

Timeline

Published: Jun 19, 2019
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2019-12900?

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

How severe is CVE-2019-12900?

CVE-2019-12900 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 8.04% probability of exploitation in the next 30 days.

How do I fix CVE-2019-12900?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2019-12900?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST