Vulnerability-Lookup

UBUNTU-CVE-2026-33069 (CVE-2026-33069)

Vulnerability from osv_ubuntu – Published: 2026-03-20 09:16 – Updated: 2026-04-22 07:58 – Source website

Details

PJSIP is a free and open source multimedia communication library written in C. Versions 2.16 and below have a cascading out-of-bounds heap read in pjsip_multipart_parse(). After boundary string matching, curptr is advanced past the delimiter without verifying it has not reached the buffer end. This allows 1-2 bytes of adjacent heap memory to be read. All applications that process incoming SIP messages with multipart bodies or SDP content are potentially affected. This issue is resolved in version 2.17.

Severity

6.9 (Medium)


                    
                      CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N

7.5 (High)


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

N/A (UNKNOWN)


                    
                      medium

References

URL

Type

	https://ubuntu.com/security/CVE-2026-33069	REPORT
	https://www.cve.org/CVERecord?id=CVE-2026-33069	REPORT
	https://github.com/pjsip/pjproject/security/advis…	REPORT
	https://github.com/pjsip/pjproject/commit/f0fa32a…	REPORT

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libpj2",
            "binary_version": "2.1.0.0.ast20130823-1+deb8u1ubuntu0.1~esm1"
          },
          {
            "binary_name": "libpjlib-util2",
            "binary_version": "2.1.0.0.ast20130823-1+deb8u1ubuntu0.1~esm1"
          },
          {
            "binary_name": "libpjmedia-audiodev2",
            "binary_version": "2.1.0.0.ast20130823-1+deb8u1ubuntu0.1~esm1"
          },
          {
            "binary_name": "libpjmedia-codec2",
            "binary_version": "2.1.0.0.ast20130823-1+deb8u1ubuntu0.1~esm1"
          },
          {
            "binary_name": "libpjmedia-videodev2",
            "binary_version": "2.1.0.0.ast20130823-1+deb8u1ubuntu0.1~esm1"
          },
          {
            "binary_name": "libpjmedia2",
            "binary_version": "2.1.0.0.ast20130823-1+deb8u1ubuntu0.1~esm1"
          },
          {
            "binary_name": "libpjnath2",
            "binary_version": "2.1.0.0.ast20130823-1+deb8u1ubuntu0.1~esm1"
          },
          {
            "binary_name": "libpjsip-simple2",
            "binary_version": "2.1.0.0.ast20130823-1+deb8u1ubuntu0.1~esm1"
          },
          {
            "binary_name": "libpjsip-ua2",
            "binary_version": "2.1.0.0.ast20130823-1+deb8u1ubuntu0.1~esm1"
          },
          {
            "binary_name": "libpjsip2",
            "binary_version": "2.1.0.0.ast20130823-1+deb8u1ubuntu0.1~esm1"
          },
          {
            "binary_name": "libpjsua2",
            "binary_version": "2.1.0.0.ast20130823-1+deb8u1ubuntu0.1~esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:16.04:LTS",
        "name": "pjproject",
        "purl": "pkg:deb/ubuntu/pjproject@2.1.0.0.ast20130823-1+deb8u1ubuntu0.1~esm1?arch=source\u0026distro=esm-apps/xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.1.0.0.ast20130823-1",
        "2.1.0.0.ast20130823-1+deb8u1build0.16.04.1",
        "2.1.0.0.ast20130823-1+deb8u1ubuntu0.1~esm1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libpj2",
            "binary_version": "2.7.2~dfsg-1ubuntu0.1~esm1"
          },
          {
            "binary_name": "libpjlib-util2",
            "binary_version": "2.7.2~dfsg-1ubuntu0.1~esm1"
          },
          {
            "binary_name": "libpjmedia-audiodev2",
            "binary_version": "2.7.2~dfsg-1ubuntu0.1~esm1"
          },
          {
            "binary_name": "libpjmedia-codec2",
            "binary_version": "2.7.2~dfsg-1ubuntu0.1~esm1"
          },
          {
            "binary_name": "libpjmedia-videodev2",
            "binary_version": "2.7.2~dfsg-1ubuntu0.1~esm1"
          },
          {
            "binary_name": "libpjmedia2",
            "binary_version": "2.7.2~dfsg-1ubuntu0.1~esm1"
          },
          {
            "binary_name": "libpjnath2",
            "binary_version": "2.7.2~dfsg-1ubuntu0.1~esm1"
          },
          {
            "binary_name": "libpjsip-simple2",
            "binary_version": "2.7.2~dfsg-1ubuntu0.1~esm1"
          },
          {
            "binary_name": "libpjsip-ua2",
            "binary_version": "2.7.2~dfsg-1ubuntu0.1~esm1"
          },
          {
            "binary_name": "libpjsip2",
            "binary_version": "2.7.2~dfsg-1ubuntu0.1~esm1"
          },
          {
            "binary_name": "libpjsua2",
            "binary_version": "2.7.2~dfsg-1ubuntu0.1~esm1"
          },
          {
            "binary_name": "libpjsua2-2v5",
            "binary_version": "2.7.2~dfsg-1ubuntu0.1~esm1"
          },
          {
            "binary_name": "python-pjproject",
            "binary_version": "2.7.2~dfsg-1ubuntu0.1~esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:18.04:LTS",
        "name": "pjproject",
        "purl": "pkg:deb/ubuntu/pjproject@2.7.2~dfsg-1ubuntu0.1~esm1?arch=source\u0026distro=esm-apps/bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.6~dfsg-2",
        "2.7~dfsg-1",
        "2.7.1~dfsg-1",
        "2.7.1~dfsg-1build1",
        "2.7.2~dfsg-1",
        "2.7.2~dfsg-1ubuntu0.1~esm1"
      ]
    }
  ],
  "aliases": [],
  "details": "PJSIP is a free and open source multimedia communication library written in C. Versions 2.16 and below have a cascading out-of-bounds heap read in pjsip_multipart_parse(). After boundary string matching, curptr is advanced past the delimiter without verifying it has not reached the buffer end. This allows 1-2 bytes of adjacent heap memory to be read. All applications that process incoming SIP messages with multipart bodies or SDP content are potentially affected. This issue is resolved in version 2.17.",
  "id": "UBUNTU-CVE-2026-33069",
  "modified": "2026-04-22T07:58:38Z",
  "published": "2026-03-20T09:16:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-33069"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-33069"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/pjsip/pjproject/security/advisories/GHSA-x5pq-qrp4-fmrj"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/pjsip/pjproject/commit/f0fa32a226df5f87a9903093e5d145ebb69734db"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    },
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2026-33069"
  ]
}

CVE-2026-33069 (GCVE-0-2026-33069)

Vulnerability from cvelistv5 – Published: 2026-03-20 08:21 – Updated: 2026-03-20 15:34

Title

PJSIP has an Out-of-bounds Read in SIP multipart parsing

Summary

Severity

6.9 (Medium)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-03-20 15:34 UTC

CWE

CWE-125 - Out-of-bounds Read

Assigner

GitHub_M mitre root

References

2 references

URL	Tags
https://github.com/pjsip/pjproject/security/advis…	x_refsource_CONFIRM
https://github.com/pjsip/pjproject/commit/f0fa32a…	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
pjsip	pjproject	Affected: < 2.17

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-33069",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-03-20T15:34:25.569015Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-03-20T15:34:38.179Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "pjproject",
          "vendor": "pjsip",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 2.17"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "PJSIP is a free and open source multimedia communication library written in C. Versions 2.16 and below have a cascading out-of-bounds heap read in pjsip_multipart_parse(). After boundary string matching, curptr is advanced past the delimiter without verifying it has not reached the buffer end. This allows 1-2 bytes of adjacent heap memory to be read. All applications that process incoming SIP messages with multipart bodies or SDP content are potentially affected. This issue is resolved in version 2.17."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "NETWORK",
            "baseScore": 6.9,
            "baseSeverity": "MEDIUM",
            "privilegesRequired": "NONE",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "NONE",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N",
            "version": "4.0",
            "vulnAvailabilityImpact": "NONE",
            "vulnConfidentialityImpact": "LOW",
            "vulnIntegrityImpact": "NONE"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-125",
              "description": "CWE-125: Out-of-bounds Read",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-03-20T08:21:51.442Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/pjsip/pjproject/security/advisories/GHSA-x5pq-qrp4-fmrj",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/pjsip/pjproject/security/advisories/GHSA-x5pq-qrp4-fmrj"
        },
        {
          "name": "https://github.com/pjsip/pjproject/commit/f0fa32a226df5f87a9903093e5d145ebb69734db",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/pjsip/pjproject/commit/f0fa32a226df5f87a9903093e5d145ebb69734db"
        }
      ],
      "source": {
        "advisory": "GHSA-x5pq-qrp4-fmrj",
        "discovery": "UNKNOWN"
      },
      "title": "PJSIP has an Out-of-bounds Read in SIP multipart parsing"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-33069",
    "datePublished": "2026-03-20T08:21:51.442Z",
    "dateReserved": "2026-03-17T19:27:06.343Z",
    "dateUpdated": "2026-03-20T15:34:38.179Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

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.