#VU33205 Information disclosure in GraphicsMagick - CVE-2017-15277

Vulnerability identifier: #VU33205

Vulnerability risk: Medium

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

CVE-ID: CVE-2017-15277

CWE-ID: CWE-200

Exploitation vector: Network

Exploit availability: No

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

Vendor: GraphicsMagick Group

Description

The vulnerability allows a remote non-authenticated attacker to gain access to sensitive information.

ReadGIFImage in coders/gif.c in ImageMagick 7.0.6-1 and GraphicsMagick 1.3.26 leaves the palette uninitialized when processing a GIF file that has neither a global nor local palette. If the affected product is used as a library loaded into a process that operates on interesting data, this data sometimes can be leaked via the uninitialized palette.

Mitigation
Install update from vendor's website.

Vulnerable software versions

GraphicsMagick: 1.3.26

---

External links
https://github.com/ImageMagick/ImageMagick/commit/9fd10cf630832b36a588c1545d8736539b2f1fb5
https://github.com/ImageMagick/ImageMagick/issues/592
https://github.com/neex/gifoeb
https://lists.debian.org/debian-lts-announce/2018/08/msg00002.html
https://usn.ubuntu.com/3681-1/
https://usn.ubuntu.com/4232-1/
https://www.debian.org/security/2017/dsa-4032
https://www.debian.org/security/2017/dsa-4040
https://www.debian.org/security/2018/dsa-4321

---

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.