Homepage

Out-of-bounds Write Affecting httpd24-debuginfo package, versions <0:2.4.33-2.78.amzn1

Severity

 Recommended
0.0
medium
0
10

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
2.45% (90th percentile)

Do your applications use this vulnerable package?

In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.

Test your applications
  • Snyk IDSNYK-AMZN201803-HTTPD24DEBUGINFO-1712656
  • published27 Sept 2021
  • disclosed26 Mar 2018
Report a new vulnerability Found a mistake?

Introduced: 26 Mar 2018

CVE-2017-15710  (opens in a new tab)
CWE-787  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2018.03 httpd24-debuginfo to version 0:2.4.33-2.78.amzn1 or higher.
This issue was patched in ALAS-2018-1004.

NVD Description

Note: Versions mentioned in the description apply only to the upstream httpd24-debuginfo package and not the httpd24-debuginfo package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2018.03 relevant fixed versions and status.

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