CVE-2017-16872 Information

Description

An issue was discovered in Teluu pjproject (pjlib and pjlib-util) in PJSIP before 2.7.1. Parsing the numeric header fields in a SIP message (like cseq ttl port etc.) all had the potential to overflow either causing unintended values to be captured or if the values were subsequently converted back to strings a buffer overrun. This will lead to a potential exploit using carefully crafted invalid values.

CVSS Vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Reference

https://trac.pjsip.org/repos/milestone/release-2.7.1 https://trac.pjsip.org/repos/ticket/2056 https://www.debian.org/security/2018/dsa-4170

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

9.8