National Vulnerability Database

National Vulnerability Database

National Vulnerability
Database

CVE-2017-15710 Detail

Current 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.

Source:  MITRE
Description Last Modified:  03/26/2018
View Analysis Description

Impact

CVSS v3.0 Severity and Metrics:

Base Score: 7.5 HIGH
Vector: AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H (V3 legend)
Impact Score: 3.6
Exploitability Score: 3.9


Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): None
Integrity (I): None
Availability (A): High

CVSS v2.0 Severity and Metrics:

Base Score: 5.0 MEDIUM
Vector: (AV:N/AC:L/Au:N/C:N/I:N/A:P) (V2 legend)
Impact Subscore: 2.9
Exploitability Subscore: 10.0


Access Vector (AV): Network
Access Complexity (AC): Low
Authentication (AU): None
Confidentiality (C): None
Integrity (I): None
Availability (A): Partial
Additional Information:
Allows disruption of service

References to Advisories, Solutions, and Tools

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Hyperlink Resource
http://www.openwall.com/lists/oss-security/2018/03/24/8 Mailing List Third Party Advisory
http://www.securityfocus.com/bid/103512 Third Party Advisory VDB Entry
http://www.securitytracker.com/id/1040569 Third Party Advisory VDB Entry
https://access.redhat.com/errata/RHSA-2018:3558
https://access.redhat.com/errata/RHSA-2019:0366
https://access.redhat.com/errata/RHSA-2019:0367
https://httpd.apache.org/security/vulnerabilities_24.html Vendor Advisory
https://lists.debian.org/debian-lts-announce/2018/05/msg00020.html
https://security.netapp.com/advisory/ntap-20180601-0004/
https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbux03909en_us
https://usn.ubuntu.com/3627-1/ Third Party Advisory
https://usn.ubuntu.com/3627-2/
https://www.debian.org/security/2018/dsa-4164 Third Party Advisory

Technical Details

Vulnerability Type (View All)

Change History

11 change records found - show changes

Quick Info

CVE Dictionary Entry:
CVE-2017-15710
NVD Published Date:
03/26/2018
NVD Last Modified:
02/19/2019