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[email protected]CVE-2021-32686

HistoryJul 23, 2021 - 10:15 p.m.

CVE-2021-32686

2021-07-2322:15:08

CWE-362

[email protected]

web.nvd.nist.gov

129

pjsip

ssl socket

race condition

denial of service

nvd

cve-2021-32686

4.3 Medium

CVSS2

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

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

5.9 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

5.7 Medium

AI Score

Confidence

High

0.006 Low

EPSS

Percentile

77.8%

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 PJSIP before version 2.11.1, there are a couple of issues found in the SSL socket. First, a race condition between callback and destroy, due to the accepted socket having no group lock. Second, the SSL socket parent/listener may get destroyed during handshake. Both issues were reported to happen intermittently in heavy load TLS connections. They cause a crash, resulting in a denial of service. These are fixed in version 2.11.1.

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"
      }
    ]
  }
]