GLSA-200504-11 : JunkBuster: Multiple vulnerabilities
High Nessus Plugin ID 18044
SynopsisThe remote Gentoo host is missing one or more security-related patches.
DescriptionThe remote host is affected by the vulnerability described in GLSA-200504-11 (JunkBuster: Multiple vulnerabilities)
James Ranson reported a vulnerability when JunkBuster is configured to run in single-threaded mode, an attacker can modify the referrer setting by getting a victim to request a specially crafted URL (CAN-2005-1108). Tavis Ormandy of the Gentoo Linux Security Audit Team identified a heap corruption issue in the filtering of URLs (CAN-2005-1109).
If JunkBuster has been configured to run in single-threaded mode, an attacker can disable or modify the filtering of Referrer: HTTP headers, potentially compromising the privacy of users. The heap corruption vulnerability could crash or disrupt the operation of the proxy, potentially executing arbitrary code.
There is no known workaround at this time.
SolutionAll JunkBuster users should upgrade to the latest version:
# emerge --sync # emerge --ask --oneshot --verbose '>=net-proxy/junkbuster-2.0.2-r3'