CVE-2015-8390 describes a critical denial-of-service vulnerability in PCRE (Perl Compatible Regular Expressions) versions prior to 8.38, affecting products like Fedora and PHP. The flaw stems from improper handling of '[:' and '\\' substrings within character classes, allowing remote attackers to trigger an uninitialized memory read via a crafted regular expression. With a CVSS score of 9.8 (Critical), this vulnerability can be exploited remotely with low attack complexity, potentially leading to a complete denial of service and possibly other unspecified impacts. While there is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB) is unavailable, and it has garnered significant community discussion despite lacking media coverage.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
<= 8.37CPE matchmatch criteria | cpe:2.3:a:pcre:perl_compatible_regular_expression_library:*:*:*:*:*:*:*:* | ||
22CPE matchmatch criteria | cpe:2.3:o:fedoraproject:fedora:22:*:*:*:*:*:*:* | ||
>= 5.5.0, < 5.5.32CPE matchmatch criteria | cpe:2.3:a:php:php:*:*:*:*:*:*:*:* | ||
>= 5.6.0, < 5.6.18CPE matchmatch criteria | cpe:2.3:a:php:php:*:*:*:*:*:*:*:* | ||
>= 7.0.0, < 7.0.3CPE matchmatch criteria | cpe:2.3:a:php:php:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.