| Package | Affected versions | Patched versions |
|---|---|---|
| squid | = 2.0_patch2= 2.1_patch2= 2.3_stable5= 2.4= 2.4_stable7= 2.5_stable3= 2.5_stable4 |
The "%xx" URL decoding function in Squid 2.5STABLE4 and earlier allows remote attackers to bypass url_regex ACLs via a URL with a NULL ("%00") character, which causes Squid to use only a portion of the requested URL when comparing it against the access control lists.
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