CVE-2017-16872
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.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (3.47%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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 3.0
- 9.8 CRITICALCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 3.47% probability · 88th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-119
- Affected
- teluu/pjsip · debian/debian linux
- Source
- cve@mitre.org
References
- https://trac.pjsip.org/repos/milestone/release-2.7.1Release Notes, Vendor Advisory
- https://trac.pjsip.org/repos/ticket/2056Vendor Advisory
- https://www.debian.org/security/2018/dsa-4170Third Party Advisory
- https://trac.pjsip.org/repos/milestone/release-2.7.1Release Notes, Vendor Advisory
- https://trac.pjsip.org/repos/ticket/2056Vendor Advisory
- https://www.debian.org/security/2018/dsa-4170Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.