The aclMatchExternal function in Squid before 2.6.STABLE7 allows remote attackers to cause a denial of service (crash) by causing an external_acl queue overload, which triggers an infinite loop.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Squid | Squid | 2.6.stable6 (including) | 2.6.stable6 (including) |
| Squid | Ubuntu | devel | * |
| Squid | Ubuntu | edgy | * |
| Squid | Ubuntu | feisty | * |