Main Vulnerability Database Vulnerabilities #VU39474

Out-of-bounds read in Debian Linux - CVE-2017-6800

Published: March 10, 2017 / Updated: August 8, 2020

Vulnerability identifier: #VU39474

CSH Severity: Medium

CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2017-6800

CWE-ID: CWE-125

Exploitation vector: Remote access

Exploit availability: No public exploit available

Vulnerability details

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

An issue was discovered in ytnef before 1.9.2. An invalid memory access (heap-based buffer over-read) can occur during handling of LONG data types, related to MAPIPrint() in libytnef.

Affected software

Debian Linux
Ubuntu
libytnef0 (Ubuntu package)

How to mitigate CVE-2017-6800

Install update from vendor's website.

libytnef0 (Ubuntu package) - update to 1.5-9ubuntu0.1

External References

http://www.debian.org/security/2017/dsa-3846
https://github.com/Yeraze/ytnef/commit/f98f5d4adc1c4bd4033638f6167c1bb95d642f89
https://github.com/Yeraze/ytnef/issues/28
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/LFJWMUEUC4ILH2HEOCYVVLQT654ZMCGQ/

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