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CVE-2016-3189

29
FAUCET Score

CVE-2016-3189 is a use-after-free vulnerability in the bzip2recover utility of bzip2 version 1.0.6, affecting bzip2 and related Python libraries. An unauthenticated remote attacker can trigger a denial of service by providing a specially crafted bzip2 file. This vulnerability has a CVSS score of 6.5 (Medium), indicating a low attack complexity and high impact on availability, but requires user interaction. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
1.0.6CPE matchmatch criteria
cpe:2.3:a:bzip:bzip2:1.0.6:*:*:*:*:*:*:*
>= 3.7.0, < 3.7.13CPE matchmatch criteria
cpe:2.3:a:python:python:*:*:*:*:*:*:*:*
>= 3.8.0, < 3.8.13CPE matchmatch criteria
cpe:2.3:a:python:python:*:*:*:*:*:*:*:*
>= 3.9.0, < 3.9.11CPE matchmatch criteria
cpe:2.3:a:python:python:*:*:*:*:*:*:*:*
>= 3.10.0, < 3.10.3CPE matchmatch criteria
cpe:2.3:a:python:python:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

6.5MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
15.83%
Probability of exploitation in next 30 days
EPSS Percentile
96.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.1583 is in the 99th percentile among its peer group of 26,219 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (7)

microsoftpatch availablevia msrc
Product: 16871-16820Fixed in: 1.0.6-15
microsoftpatch availablevia msrc
Product: CBL Mariner 1.0 x64Fixed in: 1.0.6-15
microsoftpatch availablevia msrc
Product: CBL Mariner 1.0 ARMFixed in: 1.0.6-15
microsoftpatch availablevia msrc
Product: cm1 bzip2 1.0.6-15 on CBL Mariner 1.0Fixed in: 1.0.6-15
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: bzip2
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: bzip2
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: bzip2

Vendor Advisories (3)

microsoft2020-Aug/CVE-2016-3189

CVE-2016-3189

Aug 11, 2020
redhatCVE-2016-3189Low

bzip2: heap use after free in bzip2recover

Jun 20, 2016
microsoft2016-Jun/CVE-2016-3189Moderate

Use-after-free vulnerability in bzip2recover in bzip2 1.0.6 allows remote attackers to cause a denial of service (crash) via a crafted bzip2 file related to block ends set to before the start of the block.

Jun 14, 2016

References

packetstormsecurity.com / files/153644/Slackware-Security-Advisory-bzip2-Updates.html
Third Party AdvisoryVDB Entry
packetstormsecurity.com / files/153957/FreeBSD-Security-Advisory-FreeBSD-SA-19-18.bzip2.html
Third Party AdvisoryVDB Entry
bugzilla.redhat.com / show_bug.cgi
Issue TrackingThird Party Advisory
lists.apache.org / thread.html/r19b4a70ac52093115fd71d773a7a4f579599e6275a13cfcf6252c3e3%40%3Cjira.kafka.apache.org%3E
lists.apache.org / thread.html/r1dc4c9b3bd559301bdb1557245f78b8910146efb1ee534b774c5f6af%40%3Cdev.kafka.apache.org%3E
lists.apache.org / thread.html/r481cda41fefb03e04c51484ed14421d812e5ce9e0972edff10f37260%40%3Cjira.kafka.apache.org%3E
lists.apache.org / thread.html/r4ad2ea01354e394b7fa8c78a184b7e1634d51be9bc0e9e4d7e6c9305%40%3Cjira.kafka.apache.org%3E
lists.apache.org / thread.html/r5f7ac2bd631ccb12ced65b71ff11f94e76d05b22000795e4a7b61203%40%3Cjira.kafka.apache.org%3E
lists.apache.org / thread.html/r5f80cf3ade5bb73410643e885fe6b7bf9f0222daf3533e42c7ae240c%40%3Cjira.kafka.apache.org%3E
lists.apache.org / thread.html/r6e3962fc9f6a79851f70cffdec5759065969cec9c6708b964464b301%40%3Cjira.kafka.apache.org%3E
lists.apache.org / thread.html/ra0adb9653c7de9539b93cc8434143b655f753b9f60580ff260becb2b%40%3Cusers.kafka.apache.org%3E
lists.apache.org / thread.html/redf17d8ad16140733b25ca402ae825d6dfa9b85f73d9fb3fd0c75d73%40%3Cdev.kafka.apache.org%3E
lists.apache.org / thread.html/rffebcbeaace56ff1fed7916700d2f414ca1366386fb1293e99b3e31e%40%3Cjira.kafka.apache.org%3E
lists.debian.org / debian-lts-announce/2019/06/msg00021.html
Third Party Advisory
seclists.org / bugtraq/2019/Aug/4
Mailing ListThird Party Advisory
seclists.org / bugtraq/2019/Jul/22
Mailing ListThird Party Advisory
security.freebsd.org / advisories/FreeBSD-SA-19:18.bzip2.asc
Third Party Advisory
security.gentoo.org / glsa/201708-08
Third Party Advisory
usn.ubuntu.com / 4038-1
Third Party Advisory
usn.ubuntu.com / 4038-2
Third Party Advisory
oracle.com / security-alerts/cpuoct2020.html
Third Party Advisory
openwall.com / lists/oss-security/2016/06/20/1
Mailing List
oracle.com / technetwork/topics/security/bulletinjul2016-3090568.html
Third Party Advisory
securityfocus.com / bid/91297
Third Party AdvisoryVDB Entry
securitytracker.com / id/1036132
Third Party AdvisoryVDB Entry