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[email protected]CVE-2021-43804

HistoryDec 22, 2021 - 6:15 p.m.

CVE-2021-43804

2021-12-2218:15:07

CWE-125

[email protected]

web.nvd.nist.gov

pjsip

multimedia communication

library

security

vulnerability

cve-2021-43804

7.5 High

CVSS2

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:N/AC:L/Au:N/C:P/I:P/A:P

7.3 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

LOW

Integrity Impact

LOW

Availability Impact

LOW

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

7.9 High

AI Score

Confidence

High

0.002 Low

EPSS

Percentile

61.9%

JSON

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 affected versions if the incoming RTCP BYE message contains a reason’s length, this declared length is not checked against the actual received packet size, potentially resulting in an out-of-bound read access. This issue affects all users that use PJMEDIA and RTCP. A malicious actor can send a RTCP BYE message with an invalid reason length. Users are advised to upgrade as soon as possible. There are no known workarounds.

Affected configurations

Vulners

NVD

Node

pjsippjsipRange≤2.11.1

VendorProductVersionCPE
pjsippjsip*cpe:2.3:a:pjsip:pjsip:*:*:*:*:*:*:*:*

Vendor	Product	Version	CPE
pjsip	pjsip	*	cpe:2.3:a:pjsip:pjsip::::::::

CNA Affected

[
  {
    "vendor": "pjsip",
    "product": "pjproject",
    "versions": [
      {
        "version": "<= 2.11.1",
        "status": "affected"
      }
    ]
  }
]