bzip2 1.0.6 bzip2recover use after free

CVSS Meta Temp Score
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CTI Interest Score
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6.3$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as problematic, has been found in bzip2 1.0.6. Affected by this issue is the function bzip2recover. Performing a manipulation results in use after free. This vulnerability is cataloged as CVE-2016-3189. It is possible to initiate the attack remotely. There is no exploit available. It is suggested to install a patch to address this issue.

Detailsinfo

A vulnerability was found in bzip2 1.0.6. It has been classified as critical. This affects the function bzip2recover. The manipulation with an unknown input leads to a use after free vulnerability. CWE is classifying the issue as CWE-416. Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. This is going to have an impact on availability. The summary by CVE is:

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.

The weakness was shared 06/20/2016 by Andrej Nemec as Bug 1319648 as confirmed bug report (Bugzilla). The advisory is shared at bugzilla.redhat.com. This vulnerability is uniquely identified as CVE-2016-3189 since 03/15/2016. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. It demands that the victim is doing some kind of user interaction. Technical details are known, but no exploit is available.

The vulnerability was handled as a non-public zero-day exploit for at least 91 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 96219 (Fedora 25 : bzip2 (2016-e7b46c92ae)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Fedora Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 296003 (Solaris 11.3 Support Repository Update (SRU) 10.5.0 Missing).

Applying a patch is able to eliminate this problem. The bugfix is ready for download at bugzilla.redhat.com. A possible mitigation has been published 7 months after the disclosure of the vulnerability. The vulnerability will be addressed with the following lines of code:

outFile = NULL;

The vulnerability is also documented in the databases at Tenable (96219), SecurityFocus (BID 91297†) and SecurityTracker (ID 1036132†). The entries VDB-79001, VDB-81007, VDB-81199 and VDB-82392 are related to this item. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.5
VulDB Meta Temp Score: 6.3

VulDB Base Score: 6.5
VulDB Temp Score: 6.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.5
NVD Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Use after free
CWE: CWE-416 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 96219
Nessus Name: Fedora 25 : bzip2 (2016-e7b46c92ae)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 867773
OpenVAS Name: Fedora Update for bzip2 FEDORA-2016-fd44637912
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Patch
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Patch: bugzilla.redhat.com

Timelineinfo

03/15/2016 🔍
03/21/2016 +6 days 🔍
06/20/2016 +91 days 🔍
06/20/2016 +0 days 🔍
06/20/2016 +0 days 🔍
06/21/2016 +1 days 🔍
06/30/2016 +9 days 🔍
01/02/2017 +186 days 🔍
01/03/2017 +1 days 🔍
06/09/2025 +3079 days 🔍

Sourcesinfo

Advisory: Bug 1319648
Researcher: Andrej Nemec
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2016-3189 (🔍)
GCVE (CVE): GCVE-0-2016-3189
GCVE (VulDB): GCVE-100-88089
SecurityFocus: 91297 - bzip2 '/bzip2recover.c' Denial of Service Vulnerability
SecurityTracker: 1036132

See also: 🔍

Entryinfo

Created: 06/21/2016 09:04
Updated: 06/09/2025 19:00
Changes: 06/21/2016 09:04 (74), 02/05/2019 14:41 (14), 06/09/2025 19:00 (18)
Complete: 🔍
Cache ID: 216:F3B:103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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