Vulnerability 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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Apache | Http Server | 2.4.1 |
| Debian | Debian Linux | 7.0 |
| Canonical | Ubuntu Linux | 12.04 |
| Netapp | Santricity Cloud Connector | - |
| Netapp | Storage Automation Store | - |
| Netapp | Storagegrid | - |
| Netapp | Clustered Data Ontap | - |
| Redhat | Enterprise Linux | 6.0 |
Related Weaknesses (CWE)
References
- http://www.openwall.com/lists/oss-security/2018/03/24/8Mailing ListThird Party Advisory
- http://www.securityfocus.com/bid/103512Third Party AdvisoryVDB Entry
- http://www.securitytracker.com/id/1040569Third Party AdvisoryVDB Entry
- https://access.redhat.com/errata/RHSA-2018:3558Third Party Advisory
- https://access.redhat.com/errata/RHSA-2019:0366Third Party Advisory
- https://access.redhat.com/errata/RHSA-2019:0367Third Party Advisory
- https://httpd.apache.org/security/vulnerabilities_24.htmlVendor Advisory
- https://lists.apache.org/thread.html/56c2e7cc9deb1c12a843d0dc251ea7fd3e7e80293cd
- https://lists.apache.org/thread.html/84a3714f0878781f6ed84473d1a503d2cc382277e10
- https://lists.apache.org/thread.html/r04e89e873d54116a0635ef2f7061c15acc5ed27ef7
- https://lists.apache.org/thread.html/r06f0d87ebb6d59ed8379633f36f72f5b1f79cadfda
- https://lists.apache.org/thread.html/r6521a7f62276340eabdb3339b2aa9a38c5f59d9784
- https://lists.apache.org/thread.html/r76142b8c5119df2178be7c2dba88fde552eedeec37
- https://lists.apache.org/thread.html/r9f93cf6dde308d42a9c807784e8102600d0397f5f8
- https://lists.apache.org/thread.html/rc998b18880df98bafaade071346690c2bc1444adaa
FAQ
What is CVE-2017-15710?
CVE-2017-15710 is a vulnerability with a CVSS score of 7.5 (HIGH). 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 enc...
How severe is CVE-2017-15710?
CVE-2017-15710 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2017-15710?
Check the references section above for vendor advisories and patch information. Affected products include: Apache Http Server, Debian Debian Linux, Canonical Ubuntu Linux, Netapp Santricity Cloud Connector, Netapp Storage Automation Store.