Auth bypass in Apache Http_server
CVE-2018-1312
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 authent…
Vulnerability class: Broken Authentication
EPSS: 0.159 (96.5th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Apache Http_server — versions 2.4.1, 2.4.2, 2.4.3
- Apache Software Foundation Http Server — versions 2.0.42 to 2.4.29
- Netapp Cloud_backup
- Netapp Clustered_data_ontap
- Netapp Storagegrid
- Canonical Ubuntu_linux — versions 12.04, 14.04, 16.04
- Debian Debian_linux — versions 7.0, 8.0, 9.0
- Redhat Enterprise_linux — versions 6.0, 7.0
- Redhat Enterprise_linux_desktop — versions 7.0
- Redhat Enterprise_linux_eus — versions 7.6
Weakness classification (CWE)
Public proof-of-concept exploits
References
- security@apache.org (x_refsource_UBUNTU, vendor-advisory, Third Party Advisory)
- security@apache.org (vendor-advisory, Third Party Advisory, x_refsource_DEBIAN)
- security@apache.org (x_refsource_CONFIRM, Third Party Advisory)
- security@apache.org (x_refsource_REDHAT, vendor-advisory, Third Party Advisory)
- security@apache.org (x_refsource_CONFIRM, Third Party Advisory)
- security@apache.org (x_refsource_REDHAT, vendor-advisory, Third Party Advisory)
- security@apache.org (x_refsource_UBUNTU, vendor-advisory, Third Party Advisory)
- security@apache.org (VDB Entry, Third Party Advisory, vdb-entry, x_refsource_BID)
- security@apache.org (mailing-list, x_refsource_MLIST, Mailing List, Third Party Advisory)
- security@apache.org (x_refsource_CONFIRM, Vendor Advisory)
Frequently asked questions
- What is CVE-2018-1312?
- CVE-2018-1312 is a critical-severity vulnerability in Apache Http_server, classified under Improper Authentication. CVSS score: 9.8/10. Published 2018-03-26.
- How severe is CVE-2018-1312?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2018-1312 known to be exploited?
- 38 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.