NetSight
IP …
high7.5

CVE-2017-15710

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 hea…

Impact

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 products

VendorProductAffected versions
ApacheHttp Server
Versions 2.4.1, 2.4.2, 2.4.3, 2.4.4, 2.4.6, 2.4.7
DebianDebian Linux
Versions 7.0, 8.0, 9.0
CanonicalUbuntu Linux
Versions 12.04, 14.04, 16.04, 17.10, 18.04
NetappSantricity Cloud Connector
All versions
NetappStorage Automation Store
All versions
NetappStoragegrid
All versions
NetappClustered Data Ontap
All versions
RedhatEnterprise Linux
Versions 6.0, 7.0, 7.4, 7.5, 7.6

Weakness classification

CWE-787

References