CVEvulnerability

CVE-2017-15710

7.5 HIGH Published 2018-03-26 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2018-03-26
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.0 ([email protected])
7.5 HIGH — CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS 2.0 ([email protected])
5.0 MEDIUM — AV:N/AC:L/Au:N/C:N/I:N/A:P
Weaknesses
CWE-787

Description

In Apache httpd 2.0.23 to 2.0.65, 2.2.0 to 2.2.34, and 2.4.0 to 2.4.29, mod_authnz_ldap, if configured with AuthLDAPCharsetConfig, uses the Accept-Language header value to lookup the right charset encoding when verifying the user's credentials. If the header value is not present in the charset conversion table, a fallback mechanism is used to truncate it to a two characters value to allow a quick retry (for example, 'en-US' is truncated to 'en'). A header value of less than two characters forces an out of bound write of one NUL byte to a memory location that is not part of the string. In the worst case, quite unlikely, the process would crash which could be used as a Denial of Service attack. In the more likely case, this memory is already reserved for future use and the issue has no effect at all.

Affected configurations

• apache http server 2.4.1 • apache http server 2.4.2 • apache http server 2.4.3 • apache http server 2.4.4 • apache http server 2.4.6 • apache http server 2.4.7 • apache http server 2.4.9 • apache http server 2.4.10 • apache http server 2.4.12 • apache http server 2.4.16 • apache http server 2.4.17 • apache http server 2.4.18 • apache http server 2.4.20 • apache http server 2.4.23 • apache http server 2.4.25 • apache http server 2.4.26 • apache http server 2.4.27 • apache http server 2.4.28 • apache http server 2.4.29 • debian debian linux 7.0 • debian debian linux 8.0 • debian debian linux 9.0 • canonical ubuntu linux 12.04 • canonical ubuntu linux 14.04 • canonical ubuntu linux 16.04 • canonical ubuntu linux 17.10 • canonical ubuntu linux 18.04 • netapp santricity cloud connector • netapp storage automation store • netapp storagegrid • netapp clustered data ontap • redhat enterprise linux 6.0 • redhat enterprise linux 7.0 • redhat enterprise linux 7.4 • redhat enterprise linux 7.5 • redhat enterprise linux 7.6

Related

Weakness · CWE (1)

  • CWE-787 Out-of-bounds Write weakness

References