Resource exhaustion in Pjsip Pjproject
CVE-2021-21375
PJSIP is a free and open source multimedia communication library written in C language implementing standard based protocols such as SIP, SDP, RTP, STUN, TURN, and ICE. In PJSIP version 2.10 and earlier, after an initial INVITE has been sent, when two 183 responses are received, with the first one causing negotiation failure, a crash will occur. This results in a denial of service.
Vulnerability class: DoS (Denial of Service)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.021 (80.8th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 81st percentile — 80.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.021 · newest: 0.021 · change: 0.000
Affected products
- Pjsip Pjproject — versions <= 2.10
- Teluu Pjsip
- Debian Linux — versions 9.0
Weakness classification (CWE)
References
- github.com/pjsip/pjproject/security/advisories/GHSA-hvq6-f89p-frvp (Exploit, Patch, Third Party Advisory)
- github.com/pjsip/pjproject/commit/97b3d7addbaa720b7ddb0af9bf6f3e443e664365 (Patch, Third Party Advisory)
- lists.debian.org/debian-lts-announce/2021/04/msg00023.html (mailing-list, Mailing List, Third Party Advisory)
- lists.debian.org/debian-lts-announce/2021/05/msg00020.html (mailing-list, Mailing List, Third Party Advisory)
- security.gentoo.org/glsa/202107-42 (vendor-advisory, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-21375?
- CVE-2021-21375 is a medium-severity vulnerability in Pjsip Pjproject, classified under Uncontrolled Resource Consumption. CVSS score: 6.5/10. Published 2021-03-10.
- How severe is CVE-2021-21375?
- Medium severity. CVSS v3 base score is 6.5 out of 10.