#VU12 Use-after-free memory corruption in bzip2recover in bzip2 - CVE-2016-3189

Vulnerability identifier: #VU12

Vulnerability risk: Low

CVSSv4.0: 1.2 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2016-3189

CWE-ID: CWE-416

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
bzip2
Universal components / Libraries / Libraries used by multiple products

Vendor: bzip

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
A proposed patch is available at:

https://bugzilla.redhat.com/attachment.cgi?id=1169843&action=diff

Vulnerable software versions

bzip2: 1.0.6

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External links
https://bugzilla.redhat.com/attachment.cgi?id=1169843&action=diff

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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.