CriticalFix available
apache2 — security advisory
In Apache httpd 2.2.0 to 2.4.29, when generating an HTTP Digest authentication challenge, the nonce sent to prevent reply attacks was not correctly generated using a pseudo-random seed. In a cluster of servers using a common Digest authentication configuration, HTTP requests could be replayed across servers by an attacker without detection.
- Products
- apache2
- Affected versions
- Not specified
- Fixed versions
- 2.4.33-r0
- CVEs
- CVE-2018-1312
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 21:57 UTC · Revision 1
Source evidence
In Apache httpd 2.2.0 to 2.4.29, when generating an HTTP Digest authentication challenge, the nonce sent to prevent reply attacks was not correctly generated using a pseudo-random seed. In a cluster of servers using a common Digest authentication configuration, HTTP requests could be replayed across servers by an attacker without detection.
osv:ALPINE-CVE-2018-1312
apache2
Fixed versions: 2.4.33-r0
apache2
Fixed versions: 2.4.33-r0
apache2
Fixed versions: 2.4.33-r0
apache2
Fixed versions: 2.4.33-r0
apache2
Fixed versions: 2.4.33-r0
apache2
Fixed versions: 2.4.33-r0
apache2
Fixed versions: 2.4.33-r0
apache2
Fixed versions: 2.4.33-r0
apache2
Fixed versions: 2.4.33-r0
apache2
Fixed versions: 2.4.33-r0
apache2
Fixed versions: 2.4.33-r0
apache2
Fixed versions: 2.4.33-r0
apache2
Fixed versions: 2.4.33-r0
apache2
Fixed versions: 2.4.33-r0
apache2
Fixed versions: 2.4.33-r0
apache2
Fixed versions: 2.4.33-r0
apache2
Fixed versions: 2.4.33-r0
apache2
Fixed versions: 2.4.33-r0
apache2
Fixed versions: 2.4.33-r0
apache2
Fixed versions: 2.4.33-r0
apache2
Fixed versions: 2.4.33-r0
Complete source record
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"modified": "2026-10-23T17:17:55.211479102Z",
"provider": "osv",
"upstream": [
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],
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]
},
"related_cves": [
{
"value": "CVE-2018-1312",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 415022,
"published_at": "2018-03-26T15:29:00.587+00:00"
}