CriticalFix available
asterisk, pjproject and 1 more products — security advisory
Stack overflow in PJSUA API when calling pjsua_recorder_create. An attacker-controlled 'filename' argument may cause a buffer overflow since it is copied to a fixed-size stack buffer without any size validation.
- Products
- asterisk, pjproject, ring
- Affected versions
- 1:13.1.0~dfsg-1.1ubuntu3, 1:13.1.0~dfsg-1.1ubuntu4, 1:13.1.0~dfsg-1.1ubuntu4.1, 1:13.1.0~dfsg-1.1ubuntu4.1+esm1, 1:13.17.2~dfsg-1ubuntu1, 1:13.17.2~dfsg-2ubuntu1, 1:13.18.1~dfsg-1ubuntu1, 1:13.18.3~dfsg-1ubuntu1, 1:13.18.3~dfsg-1ubuntu2, 1:13.18.3~dfsg-1ubuntu3, 1:13.18.3~dfsg-1ubuntu4, 1:16.16.1~dfsg+~2.10-1, 1:16.16.1~dfsg-2, 1:16.16.1~dfsg-4, 1:16.16.1~dfsg-4build1, 1:16.2.1~dfsg-2build2, 1:16.2.1~dfsg-2build3, 1:16.2.1~dfsg-2ubuntu1, 1:18.10.0~dfsg+~cs6.10.40431411-2, 1:20.4.0~dfsg+~cs6.13.40431414-2, 1:20.5.0~dfsg+~cs6.13.40431414-1, 1:20.5.1~dfsg+~cs6.13.40431414-1, 1:20.5.2~dfsg+~cs6.13.40431414-1, 1:20.6.0~dfsg+~cs6.13.40431414-1, 1:20.6.0~dfsg+~cs6.13.40431414-2, 1:20.6.0~dfsg+~cs6.13.40431414-2build3, 1:20.6.0~dfsg+~cs6.13.40431414-2build4, 1:20.6.0~dfsg+~cs6.13.40431414-2build5, 1:22.10.0+dfsg+~cs6.17.60671434-1ubuntu2, 1:22.10.0+dfsg+~cs6.17.60671434-1ubuntu3, 1:22.2.0~dfsg+~cs6.15.60671435-2, 1:22.3.0~dfsg+~cs6.15.60671435-1, 1:22.4.1~dfsg+~cs6.15.60671435-1, 1:22.4.1~dfsg+~cs6.15.60671435-2, 1:22.5.1~dfsg+~cs6.15.60671435-1, 1:22.5.2~dfsg+~cs6.15.60671435-1, 2.1.0.0.ast20130823-1, 2.1.0.0.ast20130823-1+deb8u1build0.16.04.1, 2.6~dfsg-2, 2.7.1~dfsg-1, 2.7.1~dfsg-1build1, 2.7.2~dfsg-1, 2.7~dfsg-1, 20170803.2.5fcfe3f~dfsg1-1, 20171024.1.eadbdeb~ds1-1, 20171129.2.cf5bbff~ds1-1, 20171129.2.cf5bbff~ds1-2, 20180119.1.9e06f94~ds1-1, 20180119.1.9e06f94~ds1-3, 20180222.1.7bffde2~ds2-2, 20180228.1.503da2b~ds1-1, 20180228.1.503da2b~ds1-1build1, 20190215.1.f152c98~ds1-1, 20190215.1.f152c98~ds1-1build1, 20190215.1.f152c98~ds1-1build2
- Fixed versions
- 2.1.0.0.ast20130823-1+deb8u1ubuntu0.1~esm1, 2.7.2~dfsg-1ubuntu0.1~esm1, 20180228.1.503da2b~ds1-1ubuntu0.1~esm1, 20190215.1.f152c98~ds1-1+deb10u2build0.20.04.1
- CVEs
- CVE-2021-43300
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 01:38 UTC · Revision 1
Source evidence
Stack overflow in PJSUA API when calling pjsua_recorder_create. An attacker-controlled 'filename' argument may cause a buffer overflow since it is copied to a fixed-size stack buffer without any size validation.
osv:UBUNTU-CVE-2021-43300
pjproject
Fixed versions: 2.1.0.0.ast20130823-1+deb8u1ubuntu0.1~esm1
asterisk
Fixed versions: Not specified
asterisk
Fixed versions: Not specified
pjproject
Fixed versions: 2.7.2~dfsg-1ubuntu0.1~esm1
ring
Fixed versions: 20180228.1.503da2b~ds1-1ubuntu0.1~esm1
ring
Fixed versions: 20190215.1.f152c98~ds1-1+deb10u2build0.20.04.1
asterisk
Fixed versions: Not specified
asterisk
Fixed versions: Not specified
asterisk
Fixed versions: Not specified
asterisk
Fixed versions: Not specified
asterisk
Fixed versions: Not specified
asterisk
Fixed versions: Not specified
Complete source record
{
"id": "d148063e2289e7895546c83d7b167135fe980af3e0ed20cdf37715269f57687f",
"url": "https://osv.dev/vulnerability/UBUNTU-CVE-2021-43300",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "UBUNTU-CVE-2021-43300",
"summary": "Stack overflow in PJSUA API when calling pjsua_recorder_create. An attacker-controlled 'filename' argument may cause a buffer overflow since it is copied to a fixed-size stack buffer without any size validation.",
"evidence": "osv:UBUNTU-CVE-2021-43300",
"products": [
{
"name": {
"value": "pjproject",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "2.1.0.0.ast20130823-1+deb8u1ubuntu0.1~esm1",
"evidence": "/affected/0/ranges"
}
],
"affected_versions": [
{
"value": "2.1.0.0.ast20130823-1",
"evidence": "/affected/0/versions"
},
{
"value": "2.1.0.0.ast20130823-1+deb8u1build0.16.04.1",
"evidence": "/affected/0/versions"
}
]
},
{
"name": {
"value": "asterisk",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "1:13.1.0~dfsg-1.1ubuntu3",
"evidence": "/affected/1/versions"
},
{
"value": "1:13.1.0~dfsg-1.1ubuntu4",
"evidence": "/affected/1/versions"
},
{
"value": "1:13.1.0~dfsg-1.1ubuntu4.1",
"evidence": "/affected/1/versions"
},
{
"value": "1:13.1.0~dfsg-1.1ubuntu4.1+esm1",
"evidence": "/affected/1/versions"
}
]
},
{
"name": {
"value": "asterisk",
"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "1:13.17.2~dfsg-1ubuntu1",
"evidence": "/affected/2/versions"
},
{
"value": "1:13.17.2~dfsg-2ubuntu1",
"evidence": "/affected/2/versions"
},
{
"value": "1:13.18.1~dfsg-1ubuntu1",
"evidence": "/affected/2/versions"
},
{
"value": "1:13.18.3~dfsg-1ubuntu1",
"evidence": "/affected/2/versions"
},
{
"value": "1:13.18.3~dfsg-1ubuntu2",
"evidence": "/affected/2/versions"
},
{
"value": "1:13.18.3~dfsg-1ubuntu3",
"evidence": "/affected/2/versions"
},
{
"value": "1:13.18.3~dfsg-1ubuntu4",
"evidence": "/affected/2/versions"
}
]
},
{
"name": {
"value": "pjproject",
"evidence": "/affected/3/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "2.7.2~dfsg-1ubuntu0.1~esm1",
"evidence": "/affected/3/ranges"
}
],
"affected_versions": [
{
"value": "2.6~dfsg-2",
"evidence": "/affected/3/versions"
},
{
"value": "2.7~dfsg-1",
"evidence": "/affected/3/versions"
},
{
"value": "2.7.1~dfsg-1",
"evidence": "/affected/3/versions"
},
{
"value": "2.7.1~dfsg-1build1",
"evidence": "/affected/3/versions"
},
{
"value": "2.7.2~dfsg-1",
"evidence": "/affected/3/versions"
}
]
},
{
"name": {
"value": "ring",
"evidence": "/affected/4/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "20180228.1.503da2b~ds1-1ubuntu0.1~esm1",
"evidence": "/affected/4/ranges"
}
],
"affected_versions": [
{
"value": "20170803.2.5fcfe3f~dfsg1-1",
"evidence": "/affected/4/versions"
},
{
"value": "20171024.1.eadbdeb~ds1-1",
"evidence": "/affected/4/versions"
},
{
"value": "20171129.2.cf5bbff~ds1-1",
"evidence": "/affected/4/versions"
},
{
"value": "20171129.2.cf5bbff~ds1-2",
"evidence": "/affected/4/versions"
},
{
"value": "20180119.1.9e06f94~ds1-1",
"evidence": "/affected/4/versions"
},
{
"value": "20180119.1.9e06f94~ds1-3",
"evidence": "/affected/4/versions"
},
{
"value": "20180222.1.7bffde2~ds2-2",
"evidence": "/affected/4/versions"
},
{
"value": "20180228.1.503da2b~ds1-1",
"evidence": "/affected/4/versions"
},
{
"value": "20180228.1.503da2b~ds1-1build1",
"evidence": "/affected/4/versions"
}
]
},
{
"name": {
"value": "ring",
"evidence": "/affected/5/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "20190215.1.f152c98~ds1-1+deb10u2build0.20.04.1",
"evidence": "/affected/5/ranges"
}
],
"affected_versions": [
{
"value": "20190215.1.f152c98~ds1-1",
"evidence": "/affected/5/versions"
},
{
"value": "20190215.1.f152c98~ds1-1build1",
"evidence": "/affected/5/versions"
},
{
"value": "20190215.1.f152c98~ds1-1build2",
"evidence": "/affected/5/versions"
}
]
},
{
"name": {
"value": "asterisk",
"evidence": "/affected/6/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "1:16.2.1~dfsg-2build2",
"evidence": "/affected/6/versions"
},
{
"value": "1:16.2.1~dfsg-2build3",
"evidence": "/affected/6/versions"
},
{
"value": "1:16.2.1~dfsg-2ubuntu1",
"evidence": "/affected/6/versions"
}
]
},
{
"name": {
"value": "asterisk",
"evidence": "/affected/7/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "1:16.16.1~dfsg-2",
"evidence": "/affected/7/versions"
},
{
"value": "1:16.16.1~dfsg-4",
"evidence": "/affected/7/versions"
},
{
"value": "1:16.16.1~dfsg-4build1",
"evidence": "/affected/7/versions"
},
{
"value": "1:16.16.1~dfsg+~2.10-1",
"evidence": "/affected/7/versions"
},
{
"value": "1:18.10.0~dfsg+~cs6.10.40431411-2",
"evidence": "/affected/7/versions"
}
]
},
{
"name": {
"value": "asterisk",
"evidence": "/affected/8/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "1:20.4.0~dfsg+~cs6.13.40431414-2",
"evidence": "/affected/8/versions"
},
{
"value": "1:20.5.0~dfsg+~cs6.13.40431414-1",
"evidence": "/affected/8/versions"
},
{
"value": "1:20.5.1~dfsg+~cs6.13.40431414-1",
"evidence": "/affected/8/versions"
},
{
"value": "1:20.5.2~dfsg+~cs6.13.40431414-1",
"evidence": "/affected/8/versions"
},
{
"value": "1:20.6.0~dfsg+~cs6.13.40431414-1",
"evidence": "/affected/8/versions"
},
{
"value": "1:20.6.0~dfsg+~cs6.13.40431414-2",
"evidence": "/affected/8/versions"
},
{
"value": "1:20.6.0~dfsg+~cs6.13.40431414-2build3",
"evidence": "/affected/8/versions"
},
{
"value": "1:20.6.0~dfsg+~cs6.13.40431414-2build4",
"evidence": "/affected/8/versions"
},
{
"value": "1:20.6.0~dfsg+~cs6.13.40431414-2build5",
"evidence": "/affected/8/versions"
}
]
},
{
"name": {
"value": "asterisk",
"evidence": "/affected/9/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "1:22.2.0~dfsg+~cs6.15.60671435-2",
"evidence": "/affected/9/versions"
},
{
"value": "1:22.3.0~dfsg+~cs6.15.60671435-1",
"evidence": "/affected/9/versions"
},
{
"value": "1:22.4.1~dfsg+~cs6.15.60671435-1",
"evidence": "/affected/9/versions"
},
{
"value": "1:22.4.1~dfsg+~cs6.15.60671435-2",
"evidence": "/affected/9/versions"
},
{
"value": "1:22.5.1~dfsg+~cs6.15.60671435-1",
"evidence": "/affected/9/versions"
},
{
"value": "1:22.5.2~dfsg+~cs6.15.60671435-1",
"evidence": "/affected/9/versions"
}
]
},
{
"name": {
"value": "asterisk",
"evidence": "/affected/10/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "1:22.5.2~dfsg+~cs6.15.60671435-1",
"evidence": "/affected/10/versions"
},
{
"value": "1:22.10.0+dfsg+~cs6.17.60671434-1ubuntu2",
"evidence": "/affected/10/versions"
},
{
"value": "1:22.10.0+dfsg+~cs6.17.60671434-1ubuntu3",
"evidence": "/affected/10/versions"
}
]
},
{
"name": {
"value": "asterisk",
"evidence": "/affected/11/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "1:22.5.2~dfsg+~cs6.15.60671435-1",
"evidence": "/affected/11/versions"
}
]
}
],
"severity": "critical",
"structured": {
"id": "UBUNTU-CVE-2021-43300",
"aliases": [
"UBUNTU-CVE-2021-43300"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
},
{
"type": "Ubuntu",
"score": "medium"
}
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "2.1.0.0.ast20130823-1+deb8u1ubuntu0.1~esm1"
}
]
}
],
"package": {
"name": "pjproject",
"purl": "pkg:deb/ubuntu/pjproject?arch=source&distro=esm-apps%2Fxenial",
"ecosystem": "Ubuntu:Pro:16.04:LTS"
},
"versions": [
"2.1.0.0.ast20130823-1",
"2.1.0.0.ast20130823-1+deb8u1build0.16.04.1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-43300.json"
},
"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"
}
],
"availability": "Available with Ubuntu Pro: https://ubuntu.com/pro"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "asterisk",
"purl": "pkg:deb/ubuntu/asterisk?arch=source&distro=esm-apps%2Fxenial",
"ecosystem": "Ubuntu:Pro:16.04:LTS"
},
"versions": [
"1:13.1.0~dfsg-1.1ubuntu3",
"1:13.1.0~dfsg-1.1ubuntu4",
"1:13.1.0~dfsg-1.1ubuntu4.1",
"1:13.1.0~dfsg-1.1ubuntu4.1+esm1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-43300.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "asterisk",
"binary_version": "1:13.1.0~dfsg-1.1ubuntu4.1+esm1"
},
{
"binary_name": "asterisk-config",
"binary_version": "1:13.1.0~dfsg-1.1ubuntu4.1+esm1"
},
{
"binary_name": "asterisk-dahdi",
"binary_version": "1:13.1.0~dfsg-1.1ubuntu4.1+esm1"
},
{
"binary_name": "asterisk-mobile",
"binary_version": "1:13.1.0~dfsg-1.1ubuntu4.1+esm1"
},
{
"binary_name": "asterisk-modules",
"binary_version": "1:13.1.0~dfsg-1.1ubuntu4.1+esm1"
},
{
"binary_name": "asterisk-mp3",
"binary_version": "1:13.1.0~dfsg-1.1ubuntu4.1+esm1"
},
{
"binary_name": "asterisk-mysql",
"binary_version": "1:13.1.0~dfsg-1.1ubuntu4.1+esm1"
},
{
"binary_name": "asterisk-ooh323",
"binary_version": "1:13.1.0~dfsg-1.1ubuntu4.1+esm1"
},
{
"binary_name": "asterisk-voicemail",
"binary_version": "1:13.1.0~dfsg-1.1ubuntu4.1+esm1"
},
{
"binary_name": "asterisk-voicemail-imapstorage",
"binary_version": "1:13.1.0~dfsg-1.1ubuntu4.1+esm1"
},
{
"binary_name": "asterisk-voicemail-odbcstorage",
"binary_version": "1:13.1.0~dfsg-1.1ubuntu4.1+esm1"
},
{
"binary_name": "asterisk-vpb",
"binary_version": "1:13.1.0~dfsg-1.1ubuntu4.1+esm1"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "asterisk",
"purl": "pkg:deb/ubuntu/asterisk?arch=source&distro=bionic",
"ecosystem": "Ubuntu:18.04:LTS"
},
"versions": [
"1:13.17.2~dfsg-1ubuntu1",
"1:13.17.2~dfsg-2ubuntu1",
"1:13.18.1~dfsg-1ubuntu1",
"1:13.18.3~dfsg-1ubuntu1",
"1:13.18.3~dfsg-1ubuntu2",
"1:13.18.3~dfsg-1ubuntu3",
"1:13.18.3~dfsg-1ubuntu4"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-43300.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "asterisk",
"binary_version": "1:13.18.3~dfsg-1ubuntu4"
},
{
"binary_name": "asterisk-config",
"binary_version": "1:13.18.3~dfsg-1ubuntu4"
},
{
"binary_name": "asterisk-dahdi",
"binary_version": "1:13.18.3~dfsg-1ubuntu4"
},
{
"binary_name": "asterisk-mobile",
"binary_version": "1:13.18.3~dfsg-1ubuntu4"
},
{
"binary_name": "asterisk-modules",
"binary_version": "1:13.18.3~dfsg-1ubuntu4"
},
{
"binary_name": "asterisk-mp3",
"binary_version": "1:13.18.3~dfsg-1ubuntu4"
},
{
"binary_name": "asterisk-mysql",
"binary_version": "1:13.18.3~dfsg-1ubuntu4"
},
{
"binary_name": "asterisk-ooh323",
"binary_version": "1:13.18.3~dfsg-1ubuntu4"
},
{
"binary_name": "asterisk-tests",
"binary_version": "1:13.18.3~dfsg-1ubuntu4"
},
{
"binary_name": "asterisk-voicemail",
"binary_version": "1:13.18.3~dfsg-1ubuntu4"
},
{
"binary_name": "asterisk-voicemail-imapstorage",
"binary_version": "1:13.18.3~dfsg-1ubuntu4"
},
{
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"modified": "2026-10-17T12:57:14.853777752Z",
"provider": "osv",
"upstream": [
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],
"references": [
"https://ubuntu.com/security/CVE-2021-43300",
"https://github.com/pjsip/pjproject/security/advisories/GHSA-qcvw-h34v-c7r9",
"https://ubuntu.com/security/notices/USN-6422-1",
"https://www.cve.org/CVERecord?id=CVE-2021-43300",
"https://ubuntu.com/security/notices/USN-8122-1"
]
},
"related_cves": [
{
"value": "CVE-2021-43300",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 357011,
"published_at": "2022-02-16T21:15:00+00:00"
}