Access of uninitialized pointer in libgcrypt (Alpine package)

Published: 2019-11-20

Risk	High
Patch available	YES
Number of vulnerabilities	1
CVE-ID	CVE-2019-13527
CWE-ID	CWE-824
Exploitation vector	Network
Public exploit	N/A
Vulnerable software Subscribe	libgcrypt (Alpine package) Operating systems & Components / Operating system package or component
Vendor	Alpine Linux Development Team

Security Bulletin

This security bulletin contains one high risk vulnerability.

1) Access of uninitialized pointer

EUVDB-ID: #VU21330

Risk: High

CVSSv3.1: 7.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-13527

CWE-ID: CWE-824 - Access of Uninitialized Pointer

Exploit availability: No

Description

The vulnerability allows a remote attacker to execute arbitrary code.

The vulnerability exists due to the affected software accesses or uses a pointer that has not been initialized. A remote attacker can trick a victim to open a specially crafted Arena file, which results in the use of a pointer that has not been initialized and execute arbitrary code on the target system.

Mitigation

Install update from vendor's website.

Vulnerable software versions

libgcrypt (Alpine package): 1.8.3-r1

External links

http://git.alpinelinux.org/aports/commit/?id=1c4658e647d8946733688266ebe9784f71859fb6
http://git.alpinelinux.org/aports/commit/?id=ccc5650a362772557233ed732836c17e9f2524e7

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.