Integer overflow in tiff (Alpine package)

1) Integer overflow

EUVDB-ID: #VU20390

Risk: Medium

CVSSv4.0: 4.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2019-14973

CWE-ID: CWE-190 - Integer overflow

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attacks.

The vulnerability exists due to integer overflow in the "_TIFFCheckMalloc" and "_TIFFCheckRealloc" functions in the "tif_aux.c" file. A remote attacker can trick a victim to open a specially crafted file that contains crafted TIFF images, trigger integer overflow and crash the target application.

Mitigation

Install update from vendor's website.

Vulnerable software versions

tiff (Alpine package): 3.9.5-r0 - 4.0.10-r0

CPE2.3

• cpe:2.3:o:alpine:tiff_alpine_package:3.9.5-r0:*:*:*:*:alpine_linux:*:2.1
• cpe:2.3:o:alpine:tiff_alpine_package:3.9.5-r1:*:*:*:*:alpine_linux:*:2.2
• cpe:2.3:o:alpine:tiff_alpine_package:3.9.6-r0:*:*:*:*:alpine_linux:*:2.1

External links

https://git.alpinelinux.org/aports/commit/?id=264df00ff86995f0cec1bf60488ce863f57304d9
https://git.alpinelinux.org/aports/commit/?id=67b27f44d268a8b0bec9de6a17edcd195d4eef71
https://git.alpinelinux.org/aports/commit/?id=928d37312121806dd7635626fa0d21b333bb4eb0
https://git.alpinelinux.org/aports/commit/?id=cbc7159a44308ba1aa3edc3d95c9178790e9a72f
https://git.alpinelinux.org/aports/commit/?id=de0584e234c2dad9d4247ee7de308a95fe2b42ac

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.