Prevent out-of-bounds read in PJSIP
CVE-2021-43845

8.2HIGH

Key Information:

Vendor

Pjsip

Status
Pjproject
Vendor
CVE Published:
27 December 2021

What is CVE-2021-43845?

PJSIP is a free and open source multimedia communication library. In version 2.11.1 and prior, if incoming RTCP XR message contain block, the data field is not checked against the received packet size, potentially resulting in an out-of-bound read access. This affects all users that use PJMEDIA and RTCP XR. A malicious actor can send a RTCP XR message with an invalid packet size.

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Affected Version(s)

pjproject <= 2.11.1

References

https://github.com/pjsip/pjproject/security/advisories/GH...
https://github.com/pjsip/pjproject/pull/2924
https://github.com/pjsip/pjproject/commit/f74c1fc22b760d2...

CVSS V3.1

Score:
8.2
Severity:
HIGH
Confidentiality:
High
Integrity:
None
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

JSON
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