MediumFix available
asterisk — security advisory
A use-after-free in res_pjsip_pubsub.c in Sangoma Asterisk 16.28, 18.14, 19.6, and certified/18.9-cert2 may allow a remote authenticated attacker to crash Asterisk (denial of service) by performing activity on a subscription via a reliable transport at the same time that Asterisk is also performing activity on that subscription.
- Products
- asterisk
- Affected versions
- Not specified
- Fixed versions
- 18.15.1-r0, 18.20.2-r0
- CVEs
- CVE-2022-42705
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 30 Oct 2026, 14:18 UTC · Revision 1
Source evidence
A use-after-free in res_pjsip_pubsub.c in Sangoma Asterisk 16.28, 18.14, 19.6, and certified/18.9-cert2 may allow a remote authenticated attacker to crash Asterisk (denial of service) by performing activity on a subscription via a reliable transport at the same time that Asterisk is also performing activity on that subscription.
osv:ALPINE-CVE-2022-42705
asterisk
Fixed versions: 18.20.2-r0
asterisk
Fixed versions: 18.15.1-r0
asterisk
Fixed versions: 18.15.1-r0
asterisk
Fixed versions: 18.15.1-r0
asterisk
Fixed versions: 18.15.1-r0
asterisk
Fixed versions: 18.15.1-r0
asterisk
Fixed versions: 18.15.1-r0
asterisk
Fixed versions: 18.15.1-r0
asterisk
Fixed versions: 18.15.1-r0
Complete source record
{
"id": "91733567ba70e6f43717faa7eded3dca99fab145954c436c521995f71742aae3",
"url": "https://osv.dev/vulnerability/ALPINE-CVE-2022-42705",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "ALPINE-CVE-2022-42705",
"summary": "A use-after-free in res_pjsip_pubsub.c in Sangoma Asterisk 16.28, 18.14, 19.6, and certified/18.9-cert2 may allow a remote authenticated attacker to crash Asterisk (denial of service) by performing activity on a subscription via a reliable transport at the same time that Asterisk is also performing activity on that subscription.",
"evidence": "osv:ALPINE-CVE-2022-42705",
"products": [
{
"name": {
"value": "asterisk",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "18.20.2-r0",
"evidence": "/affected/0/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "asterisk",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "18.15.1-r0",
"evidence": "/affected/1/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "asterisk",
"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "18.15.1-r0",
"evidence": "/affected/2/ranges"
}
],
"affected_versions": []
},
{
"name": {
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"evidence": "/affected/3/package/name"
},
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{
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"evidence": "/affected/3/ranges"
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"affected_versions": []
},
{
"name": {
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"evidence": "/affected/4/package/name"
},
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"fixed_versions": [
{
"value": "18.15.1-r0",
"evidence": "/affected/4/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "asterisk",
"evidence": "/affected/5/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "18.15.1-r0",
"evidence": "/affected/5/ranges"
}
],
"affected_versions": []
},
{
"name": {
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"evidence": "/affected/6/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "18.15.1-r0",
"evidence": "/affected/6/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "asterisk",
"evidence": "/affected/7/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "18.15.1-r0",
"evidence": "/affected/7/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "asterisk",
"evidence": "/affected/8/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "18.15.1-r0",
"evidence": "/affected/8/ranges"
}
],
"affected_versions": []
}
],
"severity": "medium",
"structured": {
"id": "ALPINE-CVE-2022-42705",
"aliases": [
"ALPINE-CVE-2022-42705"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"
}
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "16.0.0"
},
{
"fixed": "18.20.2-r0"
}
]
}
],
"package": {
"name": "asterisk",
"purl": "pkg:apk/alpine/asterisk?arch=source",
"ecosystem": "Alpine:v3.16"
},
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2022-42705.json"
},
"ecosystem_specific": {}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "16.0.0"
},
{
"fixed": "18.15.1-r0"
}
]
}
],
"package": {
"name": "asterisk",
"purl": "pkg:apk/alpine/asterisk?arch=source",
"ecosystem": "Alpine:v3.17"
},
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2022-42705.json"
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"ecosystem_specific": {}
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{
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"package": {
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"ecosystem": "Alpine:v3.18"
},
"database_specific": {
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{
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],
"package": {
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"purl": "pkg:apk/alpine/asterisk?arch=source",
"ecosystem": "Alpine:v3.19"
},
"database_specific": {
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"ecosystem_specific": {}
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{
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],
"package": {
"name": "asterisk",
"purl": "pkg:apk/alpine/asterisk?arch=source",
"ecosystem": "Alpine:v3.20"
},
"database_specific": {
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},
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{
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}
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],
"package": {
"name": "asterisk",
"purl": "pkg:apk/alpine/asterisk?arch=source",
"ecosystem": "Alpine:v3.21"
},
"database_specific": {
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{
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],
"package": {
"name": "asterisk",
"purl": "pkg:apk/alpine/asterisk?arch=source",
"ecosystem": "Alpine:v3.22"
},
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2022-42705.json"
},
"ecosystem_specific": {}
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{
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"events": [
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}
]
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],
"package": {
"name": "asterisk",
"purl": "pkg:apk/alpine/asterisk?arch=source",
"ecosystem": "Alpine:v3.23"
},
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2022-42705.json"
},
"ecosystem_specific": {}
},
{
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{
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"events": [
{
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},
{
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}
]
}
],
"package": {
"name": "asterisk",
"purl": "pkg:apk/alpine/asterisk?arch=source",
"ecosystem": "Alpine:v3.24"
},
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2022-42705.json"
},
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}
],
"modified": "2026-10-15T07:17:54.266046117Z",
"provider": "osv",
"upstream": [
"CVE-2022-42705"
],
"references": [
"https://security.alpinelinux.org/vuln/CVE-2022-42705"
]
},
"related_cves": [
{
"value": "CVE-2022-42705",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 322010,
"published_at": "2022-12-05T21:15:10.177+00:00"
}