#VU33418 Integer overflow in squashfs-tools - CVE-2015-4645

Vulnerability identifier: #VU33418

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-2015-4645

CWE-ID: CWE-190

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
squashfs-tools
Other software / Other software solutions

Vendor: plougher

Description

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

The vulnerability exists due to a boundary error within the read_fragment_table_4() function in unsquash-4.c . A remote attacker can pass specially crafted data to the application, trigger an integer overflow and perform a denial of service (DoS) attack.

Mitigation
Install update from vendor's website.

Vulnerable software versions

squashfs-tools: 3.1 - 3.2

---

External links
https://lists.fedoraproject.org/pipermail/package-announce/2015-July/162171.html
https://lists.fedoraproject.org/pipermail/package-announce/2015-July/162226.html
https://www.securityfocus.com/bid/75272
https://bugzilla.redhat.com/show_bug.cgi?id=1234886
https://github.com/devttys0/sasquatch/pull/5
https://github.com/plougher/squashfs-tools/commit/f95864afe8833fe3ad782d714b41378e860977b1
https://security.gentoo.org/glsa/201701-73

---

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.