CVE-2022-21723 (GCVE-0-2022-21723)

Vulnerability from cvelistv5 – Published: 2022-01-27 00:00 – Updated: 2025-11-04 16:09
VLAI
Title
Out-of-bounds read in multipart parsing in PJSIP
Summary
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 versions 2.11.1 and prior, parsing an incoming SIP message that contains a malformed multipart can potentially cause out-of-bound read access. This issue affects all PJSIP users that accept SIP multipart. The patch is available as commit in the `master` branch. There are no known workarounds.
Severity
9.1 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-04-23 15:57 UTC
CWE
Assigner
References
Impacted products
Vendor Product Version CPE status
pjsip pjproject Affected: <= 2.11.1
guessed Create a notification for this product.
Show details on NVD website
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            "tags": [
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            ],
            "url": "https://lists.debian.org/debian-lts-announce/2022/11/msg00021.html"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "https://lists.debian.org/debian-lts-announce/2023/08/msg00038.html"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "https://lists.debian.org/debian-lts-announce/2024/09/msg00030.html"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Third Party Advisory"
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            "url": "https://security.gentoo.org/glsa/202210-37"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Third Party Advisory"
            ],
            "url": "https://www.debian.org/security/2022/dsa-5285"
          }
        ],
        "sourceIdentifier": "security-advisories@github.com",
        "vulnStatus": "Modified",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-125"
              }
            ],
            "source": "security-advisories@github.com",
            "type": "Secondary"
          },
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-125"
              }
            ],
            "source": "nvd@nist.gov",
            "type": "Primary"
          }
        ]
      }
    },
    "redhat_vex": {
      "current_release_date": "2026-06-26T16:15:08+00:00",
      "cve": "CVE-2022-21723",
      "id": "CVE-2022-21723",
      "initial_release_date": "2022-01-01T00:00:00+00:00",
      "product_status:known_not_affected": "1",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "pjsip: malformed SIP packets may cause out-of-bounds read access",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2022/cve-2022-21723.json",
      "version": "3"
    },
    "vulnrichment": {
      "containers": {
        "adp": [
          {
            "providerMetadata": {
              "dateUpdated": "2025-11-04T16:09:30.947Z",
              "orgId": "af854a3a-2127-422b-91ae-364da2661108",
              "shortName": "CVE"
            },
            "references": [
              {
                "tags": [
                  "x_transferred"
                ],
                "url": "https://github.com/pjsip/pjproject/security/advisories/GHSA-7fw8-54cv-r7pm"
              },
              {
                "tags": [
                  "x_transferred"
                ],
                "url": "https://github.com/pjsip/pjproject/commit/077b465c33f0aec05a49cd2ca456f9a1b112e896"
              },
              {
                "name": "20220304 AST-2022-006: pjproject: unconstrained malformed multipart SIP message",
                "tags": [
                  "mailing-list",
                  "x_transferred"
                ],
                "url": "http://seclists.org/fulldisclosure/2022/Mar/2"
              },
              {
                "tags": [
                  "x_transferred"
                ],
                "url": "http://packetstormsecurity.com/files/166227/Asterisk-Project-Security-Advisory-AST-2022-006.html"
              },
              {
                "name": "[debian-lts-announce] 20220328 [SECURITY] [DLA 2962-1] pjproject security update",
                "tags": [
                  "mailing-list",
                  "x_transferred"
                ],
                "url": "https://lists.debian.org/debian-lts-announce/2022/03/msg00035.html"
              },
              {
                "name": "GLSA-202210-37",
                "tags": [
                  "vendor-advisory",
                  "x_transferred"
                ],
                "url": "https://security.gentoo.org/glsa/202210-37"
              },
              {
                "name": "[debian-lts-announce] 20221117 [SECURITY] [DLA 3194-1] asterisk security update",
                "tags": [
                  "mailing-list",
                  "x_transferred"
                ],
                "url": "https://lists.debian.org/debian-lts-announce/2022/11/msg00021.html"
              },
              {
                "name": "DSA-5285",
                "tags": [
                  "vendor-advisory",
                  "x_transferred"
                ],
                "url": "https://www.debian.org/security/2022/dsa-5285"
              },
              {
                "name": "[debian-lts-announce] 20230829 [SECURITY] [DLA 3549-1] ring security update",
                "tags": [
                  "mailing-list",
                  "x_transferred"
                ],
                "url": "https://lists.debian.org/debian-lts-announce/2023/08/msg00038.html"
              },
              {
                "url": "https://lists.debian.org/debian-lts-announce/2024/09/msg00030.html"
              }
            ],
            "title": "CVE Program Container"
          },
          {
            "metrics": [
              {
                "other": {
                  "content": {
                    "id": "CVE-2022-21723",
                    "options": [
                      {
                        "Exploitation": "none"
                      },
                      {
                        "Automatable": "yes"
                      },
                      {
                        "Technical Impact": "partial"
                      }
                    ],
                    "role": "CISA Coordinator",
                    "timestamp": "2025-04-23T15:57:51.215676Z",
                    "version": "2.0.3"
                  },
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              }
            ],
            "providerMetadata": {
              "dateUpdated": "2025-04-23T15:57:53.419Z",
              "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "shortName": "CISA-ADP"
            },
            "title": "CISA ADP Vulnrichment"
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        ],
        "cna": {
          "affected": [
            {
              "product": "pjproject",
              "vendor": "pjsip",
              "versions": [
                {
                  "status": "affected",
                  "version": "\u003c= 2.11.1"
                }
              ]
            }
          ],
          "descriptions": [
            {
              "lang": "en",
              "value": "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 versions 2.11.1 and prior, parsing an incoming SIP message that contains a malformed multipart can potentially cause out-of-bound read access. This issue affects all PJSIP users that accept SIP multipart. The patch is available as commit in the `master` branch. There are no known workarounds."
            }
          ],
          "metrics": [
            {
              "cvssV3_1": {
                "attackComplexity": "LOW",
                "attackVector": "NETWORK",
                "availabilityImpact": "HIGH",
                "baseScore": 9.1,
                "baseSeverity": "CRITICAL",
                "confidentialityImpact": "HIGH",
                "integrityImpact": "NONE",
                "privilegesRequired": "NONE",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H",
                "version": "3.1"
              }
            }
          ],
          "problemTypes": [
            {
              "descriptions": [
                {
                  "cweId": "CWE-125",
                  "description": "CWE-125: Out-of-bounds Read",
                  "lang": "en",
                  "type": "CWE"
                }
              ]
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2023-08-30T00:06:29.216Z",
            "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
            "shortName": "GitHub_M"
          },
          "references": [
            {
              "url": "https://github.com/pjsip/pjproject/security/advisories/GHSA-7fw8-54cv-r7pm"
            },
            {
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            },
            {
              "name": "20220304 AST-2022-006: pjproject: unconstrained malformed multipart SIP message",
              "tags": [
                "mailing-list"
              ],
              "url": "http://seclists.org/fulldisclosure/2022/Mar/2"
            },
            {
              "url": "http://packetstormsecurity.com/files/166227/Asterisk-Project-Security-Advisory-AST-2022-006.html"
            },
            {
              "name": "[debian-lts-announce] 20220328 [SECURITY] [DLA 2962-1] pjproject security update",
              "tags": [
                "mailing-list"
              ],
              "url": "https://lists.debian.org/debian-lts-announce/2022/03/msg00035.html"
            },
            {
              "name": "GLSA-202210-37",
              "tags": [
                "vendor-advisory"
              ],
              "url": "https://security.gentoo.org/glsa/202210-37"
            },
            {
              "name": "[debian-lts-announce] 20221117 [SECURITY] [DLA 3194-1] asterisk security update",
              "tags": [
                "mailing-list"
              ],
              "url": "https://lists.debian.org/debian-lts-announce/2022/11/msg00021.html"
            },
            {
              "name": "DSA-5285",
              "tags": [
                "vendor-advisory"
              ],
              "url": "https://www.debian.org/security/2022/dsa-5285"
            },
            {
              "name": "[debian-lts-announce] 20230829 [SECURITY] [DLA 3549-1] ring security update",
              "tags": [
                "mailing-list"
              ],
              "url": "https://lists.debian.org/debian-lts-announce/2023/08/msg00038.html"
            }
          ],
          "source": {
            "advisory": "GHSA-7fw8-54cv-r7pm",
            "discovery": "UNKNOWN"
          },
          "title": "Out-of-bounds read in multipart parsing in PJSIP"
        }
      },
      "cveMetadata": {
        "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "assignerShortName": "GitHub_M",
        "cveId": "CVE-2022-21723",
        "datePublished": "2022-01-27T00:00:00.000Z",
        "dateReserved": "2021-11-16T00:00:00.000Z",
        "dateUpdated": "2025-11-04T16:09:30.947Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.


Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.