Out-of-bound read in Apache HTTP Server - CVE-2017-7668
Published: June 20, 2017 / Updated: July 14, 2017
Vulnerability identifier: #VU7117
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2017-7668
CWE-ID: CWE-125
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Apache Foundation
Affected software:
Apache HTTP Server
Apache HTTP Server
Detailed vulnerability description
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to boundary error when processing token lists within ap_find_token() function. A remote unauthenticated attacker can create a specially crafted sequence of HTTP headers and refer to data past the end of the search string.
Successful exploitation of this vulnerability results segmentation fault and web server crash.
How to mitigate CVE-2017-7668
Update to version 2.2.34 or 2.4.26.