{"api_version":"1","generated_at":"2026-04-23T06:59:49+00:00","cve":"CVE-2021-43845","urls":{"html":"https://cve.report/CVE-2021-43845","api":"https://cve.report/api/cve/CVE-2021-43845.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2021-43845","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2021-43845"},"summary":{"title":"CVE-2021-43845","description":"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.","state":"PUBLIC","assigner":"security-advisories@github.com","published_at":"2021-12-27 18:15:00","updated_at":"2023-08-30 01:15:00"},"problem_types":["CWE-125"],"metrics":[],"references":[{"url":"https://github.com/pjsip/pjproject/pull/2924","name":"https://github.com/pjsip/pjproject/pull/2924","refsource":"MISC","tags":[],"title":"Prevent OOB read for RTCP XR block by trengginas · Pull Request #2924 · pjsip/pjproject · GitHub","mime":"text/html","httpstatus":"200","archivestatus":"404"},{"url":"https://lists.debian.org/debian-lts-announce/2022/03/msg00035.html","name":"[debian-lts-announce] 20220328 [SECURITY] [DLA 2962-1] pjproject security update","refsource":"MLIST","tags":[],"title":"[SECURITY] [DLA 2962-1] pjproject security update","mime":"text/html","httpstatus":"200","archivestatus":"404"},{"url":"https://github.com/pjsip/pjproject/security/advisories/GHSA-r374-qrwv-86hh","name":"https://github.com/pjsip/pjproject/security/advisories/GHSA-r374-qrwv-86hh","refsource":"CONFIRM","tags":[],"title":"Prevent OOB read for RTCP XR block · Advisory · pjsip/pjproject · GitHub","mime":"text/html","httpstatus":"200","archivestatus":"404"},{"url":"https://security.gentoo.org/glsa/202210-37","name":"GLSA-202210-37","refsource":"GENTOO","tags":[],"title":"PJSIP: Multiple Vulnerabilities (GLSA 202210-37) — Gentoo security","mime":"text/html","httpstatus":"200","archivestatus":"404"},{"url":"https://lists.debian.org/debian-lts-announce/2023/08/msg00038.html","name":"[debian-lts-announce] 20230829 [SECURITY] [DLA 3549-1] ring security update","refsource":"MLIST","tags":[],"title":"[SECURITY] [DLA 3549-1] ring security update","mime":"text/html","httpstatus":"200","archivestatus":"404"},{"url":"https://www.debian.org/security/2022/dsa-5285","name":"DSA-5285","refsource":"DEBIAN","tags":[],"title":"Debian -- Security Information -- DSA-5285-1 asterisk","mime":"text/html","httpstatus":"200","archivestatus":"404"},{"url":"https://github.com/pjsip/pjproject/commit/f74c1fc22b760d2a24369aa72c74c4a9ab985859","name":"https://github.com/pjsip/pjproject/commit/f74c1fc22b760d2a24369aa72c74c4a9ab985859","refsource":"MISC","tags":[],"title":"Merge pull request from GHSA-r374-qrwv-86hh · pjsip/pjproject@f74c1fc · GitHub","mime":"text/html","httpstatus":"200","archivestatus":"404"},{"url":"https://lists.debian.org/debian-lts-announce/2022/11/msg00021.html","name":"[debian-lts-announce] 20221117 [SECURITY] [DLA 3194-1] asterisk security update","refsource":"MLIST","tags":[],"title":"[SECURITY] [DLA 3194-1] asterisk security update","mime":"text/html","httpstatus":"200","archivestatus":"404"},{"url":"https://www.cve.org/CVERecord?id=CVE-2021-43845","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-43845","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[{"cve_year":"2021","cve_id":"43845","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"o","cpe4":"debian","cpe5":"debian_linux","cpe6":"10.0","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2021","cve_id":"43845","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"o","cpe4":"debian","cpe5":"debian_linux","cpe6":"11.0","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2021","cve_id":"43845","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"o","cpe4":"debian","cpe5":"debian_linux","cpe6":"9.0","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2021","cve_id":"43845","vulnerable":"1","versionEndIncluding":"2.11.1","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"teluu","cpe5":"pjsip","cpe6":"*","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"}],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[{"cve":"CVE-2021-43845","qid":"179161","title":"Debian Security Update for pjproject (DLA 2962-1)"},{"cve":"CVE-2021-43845","qid":"181225","title":"Debian Security Update for asterisk (DLA 3194-1)"},{"cve":"CVE-2021-43845","qid":"181237","title":"Debian Security Update for asterisk (DSA 5285-1)"},{"cve":"CVE-2021-43845","qid":"182720","title":"Debian Security Update for ring (CVE-2021-43845)"},{"cve":"CVE-2021-43845","qid":"199817","title":"Ubuntu Security Notification for Ring Vulnerabilities (USN-6422-1)"},{"cve":"CVE-2021-43845","qid":"502231","title":"Alpine Linux Security Update for pjproject"},{"cve":"CVE-2021-43845","qid":"504292","title":"Alpine Linux Security Update for pjproject"},{"cve":"CVE-2021-43845","qid":"6000045","title":"Debian Security Update for ring (DLA 3549-1)"},{"cve":"CVE-2021-43845","qid":"710674","title":"Gentoo Linux PJSIP Multiple Vulnerabilities (GLSA 202210-37)"}]},"source_records":{"cve_program":{"CVE_data_meta":{"ASSIGNER":"security-advisories@github.com","ID":"CVE-2021-43845","STATE":"PUBLIC","TITLE":"Prevent out-of-bounds read in PJSIP"},"affects":{"vendor":{"vendor_data":[{"product":{"product_data":[{"product_name":"pjproject","version":{"version_data":[{"version_value":"<= 2.11.1"}]}}]},"vendor_name":"pjsip"}]}},"data_format":"MITRE","data_type":"CVE","data_version":"4.0","description":{"description_data":[{"lang":"eng","value":"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."}]},"impact":{"cvss":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"LOW","baseScore":8.2,"baseSeverity":"HIGH","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:L","version":"3.1"}},"problemtype":{"problemtype_data":[{"description":[{"lang":"eng","value":"CWE-125: Out-of-bounds Read"}]}]},"references":{"reference_data":[{"name":"https://github.com/pjsip/pjproject/security/advisories/GHSA-r374-qrwv-86hh","refsource":"CONFIRM","url":"https://github.com/pjsip/pjproject/security/advisories/GHSA-r374-qrwv-86hh"},{"name":"https://github.com/pjsip/pjproject/pull/2924","refsource":"MISC","url":"https://github.com/pjsip/pjproject/pull/2924"},{"name":"https://github.com/pjsip/pjproject/commit/f74c1fc22b760d2a24369aa72c74c4a9ab985859","refsource":"MISC","url":"https://github.com/pjsip/pjproject/commit/f74c1fc22b760d2a24369aa72c74c4a9ab985859"},{"refsource":"MLIST","name":"[debian-lts-announce] 20220328 [SECURITY] [DLA 2962-1] pjproject security update","url":"https://lists.debian.org/debian-lts-announce/2022/03/msg00035.html"},{"refsource":"GENTOO","name":"GLSA-202210-37","url":"https://security.gentoo.org/glsa/202210-37"},{"refsource":"MLIST","name":"[debian-lts-announce] 20221117 [SECURITY] [DLA 3194-1] asterisk security update","url":"https://lists.debian.org/debian-lts-announce/2022/11/msg00021.html"},{"refsource":"DEBIAN","name":"DSA-5285","url":"https://www.debian.org/security/2022/dsa-5285"},{"refsource":"MLIST","name":"[debian-lts-announce] 20230829 [SECURITY] [DLA 3549-1] ring security update","url":"https://lists.debian.org/debian-lts-announce/2023/08/msg00038.html"}]},"source":{"advisory":"GHSA-r374-qrwv-86hh","discovery":"UNKNOWN"}},"nvd":{"publishedDate":"2021-12-27 18:15:00","lastModifiedDate":"2023-08-30 01:15:00","problem_types":["CWE-125"],"metrics":{"baseMetricV3":{"cvssV3":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"NONE","availabilityImpact":"HIGH","baseScore":9.1,"baseSeverity":"CRITICAL"},"exploitabilityScore":3.9,"impactScore":5.2},"baseMetricV2":{"cvssV2":{"version":"2.0","vectorString":"AV:N/AC:L/Au:N/C:P/I:N/A:P","accessVector":"NETWORK","accessComplexity":"LOW","authentication":"NONE","confidentialityImpact":"PARTIAL","integrityImpact":"NONE","availabilityImpact":"PARTIAL","baseScore":6.4},"severity":"MEDIUM","exploitabilityScore":10,"impactScore":4.9,"acInsufInfo":false,"obtainAllPrivilege":false,"obtainUserPrivilege":false,"obtainOtherPrivilege":false,"userInteractionRequired":false}},"configurations":{"CVE_data_version":"4.0","nodes":[{"operator":"OR","children":[],"cpe_match":[{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:teluu:pjsip:*:*:*:*:*:*:*:*","versionEndIncluding":"2.11.1","cpe_name":[]}]},{"operator":"OR","children":[],"cpe_match":[{"vulnerable":true,"cpe23Uri":"cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*","cpe_name":[]}]}]}},"legacy_mitre":{"record":{"CveYear":"2021","CveId":"43845","Ordinal":"221379","Title":"CVE-2021-43845","CVE":"CVE-2021-43845","Year":"2021"},"notes":[{"CveYear":"2021","CveId":"43845","Ordinal":"1","NoteData":"** RESERVED ** This candidate has been reserved by an organization or individual that will use it when announcing a new security problem. When the candidate has been publicized, the details for this candidate will be provided.","Type":"Description","Title":null}]}}}