PCRE before 8.38 mishandles the /(?:|a|){100}x/ pattern and related patterns, which allows remote attackers to cause a denial of service (infinite recursion) or possibly have unspecified other impact via a crafted regular expression, as demonstrated by a JavaScript RegExp object encountered by Konqueror.
{ "ubuntu_priority": "low", "availability": "No subscription required", "binaries": [ { "binary_name": "libpcre16-3", "binary_version": "2:8.38-3" }, { "binary_name": "libpcre16-3-dbgsym", "binary_version": "2:8.38-3" }, { "binary_name": "libpcre3", "binary_version": "2:8.38-3" }, { "binary_name": "libpcre3-dbg", "binary_version": "2:8.38-3" }, { "binary_name": "libpcre3-dbgsym", "binary_version": "2:8.38-3" }, { "binary_name": "libpcre3-dev", "binary_version": "2:8.38-3" }, { "binary_name": "libpcre3-dev-dbgsym", "binary_version": "2:8.38-3" }, { "binary_name": "libpcre3-udeb", "binary_version": "2:8.38-3" }, { "binary_name": "libpcre3-udeb-dbgsym", "binary_version": "2:8.38-3" }, { "binary_name": "libpcre32-3", "binary_version": "2:8.38-3" }, { "binary_name": "libpcre32-3-dbgsym", "binary_version": "2:8.38-3" }, { "binary_name": "libpcrecpp0v5", "binary_version": "2:8.38-3" }, { "binary_name": "libpcrecpp0v5-dbgsym", "binary_version": "2:8.38-3" }, { "binary_name": "pcregrep", "binary_version": "2:8.38-3" }, { "binary_name": "pcregrep-dbgsym", "binary_version": "2:8.38-3" } ] }