#VU36489 Out-of-bounds read in xpdf - CVE-2018-18454

Vulnerability identifier: #VU36489

Vulnerability risk: Medium

CVSSv4.0: 4 [CVSS:4.0/AV:L/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-2018-18454

CWE-ID: CWE-125

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
xpdf
Client/Desktop applications / Office applications

Vendor: Glyph & Cog

Description

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

The vulnerability exists due to a boundary error in CCITTFaxStream::readRow() in Stream.cc in Xpdf 4.00. A remote attacker can perform a denial of service (heap-based buffer over-read) via a crafted pdf file, as demonstrated by pdftoppm.

Mitigation
Cybersecurity Help is currently unaware of any official solution to address this vulnerability.

Vulnerable software versions

xpdf: 4.00

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External links
https://forum.xpdfreader.com/viewtopic.php?f=3&t=41217
https://github.com/TeamSeri0us/pocs/tree/master/xpdf/2018_10_16/pdftoppm

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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.