Buffer overflow in clamav (Alpine package)

1) Buffer overflow

EUVDB-ID: #VU10317

Risk: High

CVSSv4.0: 8.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2017-12379

CWE-ID: CWE-120 - Buffer overflow

Exploit availability: No

Description

The vulnerability allows a remote attacker to cause DoS condition or execute arbitrary code on the target system.

The weakness exists due to input validation checking mechanisms in the message parsing function. A remote attacker can send a specially crafted email, trigger a messageAddArgument (in message.c) buffer overflow condition and cause the service to crash or execute arbitrary code with elevated privileges.

Successful exploitation of the vulnerability may result in system compromise.

Mitigation

Install update from vendor's website.

Vulnerable software versions

clamav (Alpine package): 0.97.3-r0 - 0.100.0-r2

CPE2.3

• cpe:2.3:o:alpine:clamav_alpine_package:0.97.3-r0:*:*:*:*:alpine_linux:*:2.1
• cpe:2.3:o:alpine:clamav_alpine_package:0.97.7-r1:*:*:*:*:alpine_linux:*:2.1
• cpe:2.3:o:alpine:clamav_alpine_package:0.97.8-r0:*:*:*:*:alpine_linux:*:2.2

External links

https://git.alpinelinux.org/aports/commit/?id=540c3721c297fd86200a7518c76e7f8a5b51a83b
https://git.alpinelinux.org/aports/commit/?id=90552e261c77a65b5d25b9f935af4236ea1e08c1
https://git.alpinelinux.org/aports/commit/?id=3b5a0401336d78fb0ee7f8579876034537911de4

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.