Information disclosure in Apache HTTP Server - CVE-2017-9788
Published: July 13, 2017 / Updated: July 14, 2017
Vulnerability identifier: #VU7517
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2017-9788
CWE-ID: CWE-200
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 unauthenticated attacker to obtain potentially sensitive information on the targeted system.
The weakness exists due to improper initialization of the value placeholder in [Proxy-]Authorization headers of type 'Digest' before or between successive key=value assignments by mod_auth_digest. A remote attacker can provide an initial key with no '=' assignment to cause the stale value of uninitialized pool memory used by the prior request to leak.
Successful exploitation of the vulnerability results in information disclosure.
How to mitigate CVE-2017-9788
Update Apache HTTP server to version 2.2.34 or 2.4.26.