CVE-2017-12883

A heap buffer overread was found in perl's grok_bslash_N() function, which is used in the compilation of Unicode nodes in regular expressions, possibly leading to crash or dump of memory segments via the error output. An attacker, able to provide a specially crafted regular expression, could look for sensible information in the error message, or crash perl.

Perl as shipped in Red Hat Enterprise Linux 7 and older have not been found to be vulnerable. This vulnerability was not present in perl versions older than 5.20.

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.