CVE - CVE-2017-15710

CVE-ID
CVE-2017-15710	Learn more at National Vulnerability Database (NVD) • CVSS Severity Rating • Fix Information • Vulnerable Software Versions • SCAP Mappings • CPE Information
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.
References
Note: References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
MLIST:[oss-security] 20180323 CVE-2017-15710: Out of bound write in mod_authnz_ldap when using too small Accept-Language values URL:http://www.openwall.com/lists/oss-security/2018/03/24/8 MLIST:[debian-lts-announce] 20180530 [SECURITY] [DLA 1389-1] apache2 security update URL:https://lists.debian.org/debian-lts-announce/2018/05/msg00020.html CONFIRM:https://httpd.apache.org/security/vulnerabilities_24.html CONFIRM:https://security.netapp.com/advisory/ntap-20180601-0004/ DEBIAN:DSA-4164 URL:https://www.debian.org/security/2018/dsa-4164 UBUNTU:USN-3627-1 URL:https://usn.ubuntu.com/3627-1/ UBUNTU:USN-3627-2 URL:https://usn.ubuntu.com/3627-2/ BID:103512 URL:http://www.securityfocus.com/bid/103512 SECTRACK:1040569 URL:http://www.securitytracker.com/id/1040569
Assigning CNA
Apache Software Foundation
Date Entry Created
20171021	Disclaimer: The entry creation date may reflect when the CVE ID was allocated or reserved, and does not necessarily indicate when this vulnerability was discovered, shared with the affected vendor, publicly disclosed, or updated in CVE.
Phase (Legacy)
Assigned (20171021)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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