CVE-2011-1499

Severity: low (CVSS 2.6 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.8% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2011-04-29 · updated 2026-06-16
Weakness: CWE-16

Description

acl.c in Tinyproxy before 1.8.3, when an Allow configuration setting specifies a CIDR block, permits TCP connections from all IP addresses, which makes it easier for remote attackers to hide the origin of web traffic by leveraging the open HTTP proxy server.

Affected products

Banu Tinyproxy: through 1.8.2; 1.5.0, 1.5.0-pre1, 1.5.0-pre2, 1.5.0-pre3, 1.5.0-pre4, 1.5.0-pre5 (+44)
Debian Linux: 6.0

References

http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=621493
http://openwall.com/lists/oss-security/2011/04/07/9
http://openwall.com/lists/oss-security/2011/04/08/3
http://secunia.com/advisories/44274
http://www.debian.org/security/2011/dsa-2222
https://banu.com/bugzilla/show_bug.cgi?id=90
https://banu.com/cgit/tinyproxy/diff/?id=e8426f6662dc467bd1d827100481b95d9a4a23e4
https://bugzilla.redhat.com/show_bug.cgi?id=694658
https://exchange.xforce.ibmcloud.com/vulnerabilities/67256
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=621493
http://openwall.com/lists/oss-security/2011/04/07/9
http://openwall.com/lists/oss-security/2011/04/08/3

Get alerted when CVE-2011-1499 or the next vulnerability affects your stack