Use-after-free memory corruption in bzip2recover in bzip2 (Alpine package)

Published: 2016-09-26

Risk	Low
Patch available	YES
Number of vulnerabilities	1
CVE-ID	CVE-2016-3189
CWE-ID	CWE-416
Exploitation vector	Network
Public exploit	N/A
Vulnerable software Subscribe	bzip2 (Alpine package) Operating systems & Components / Operating system package or component
Vendor	Alpine Linux Development Team

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Use-after-free memory corruption in bzip2recover

EUVDB-ID: #VU12

Risk: Low

CVSSv3.1: 3.8 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2016-3189

CWE-ID: CWE-416 - Use After Free

Exploit availability: No

Description

The vulnerability allows a remote attacker to cause the target application to crash.

The vulnerability exists due to an use-after-free error in bzip2recover when handling bzip2 files. A remote unauthenticated attacker can send a specially crafted bzip2 archive and cause the target application to crash.

Successful exploitation of this vulnerability will result in denial of service.

Mitigation

Install update from vendor's website.

Vulnerable software versions

bzip2 (Alpine package): 1.0.6-r0 - 1.0.6-r4

External links

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.