#VU32121 Buffer overflow in LibTIFF - CVE-2017-7593

Vulnerability identifier: #VU32121

Vulnerability risk: Low

CVSSv4.0: 4 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2017-7593

CWE-ID: CWE-119

Exploitation vector: Local

Exploit availability: No

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

Vendor: LibTIFF

Description

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

tif_read.c in LibTIFF 4.0.7 does not ensure that tif_rawdata is properly initialized, which might allow remote attackers to obtain sensitive information from process memory via a crafted image.

Mitigation
Install update from vendor's website.

Vulnerable software versions

LibTIFF: 1:6.0p1-4+deb7u4

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External links
https://bugzilla.maptools.org/show_bug.cgi?id=2651
https://www.debian.org/security/2017/dsa-3844
https://www.securityfocus.com/bid/97502
https://security.gentoo.org/glsa/201709-27
https://usn.ubuntu.com/3602-1/

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Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.