CVE-2022-1586CWE-125

An out-of-bounds read vulnerability was discovered in the PCRE2 library in the compile_xclass_matchingpath() function of the pcre2_jit_compile.c file

published May 16, 2022

CVSS
—
EPSS
3%
Percentile
88.7
In the wild
Unconfirmed
What it is

⚠️ A unicode property matching hiccup in the PCRE2 library could lead to unexpected out-of-bounds reads! This sneaky little bug is hiding in the 'compile_xclass_matchingpath()' function. 🔍 Think of it like a librarian trying to find a book in a massive library but missing crucial sections of the catalog— they might pull the wrong title or even retrieve nothing at all! In this case, the JIT-compiled regular expressions can trip over themselves if they don’t fully read certain characters during case-less matching. This vulnerability could allow attackers to gain access to sensitive information or crash systems through unexpected behaviors. While the exploit isn't currently known, the potential consequences are definitely something to keep an eye on—better to patch it than to find out the hard way!

Put simply

Think of it like a librarian trying to find a book in a massive library but missing crucial sections of the catalog— they might pull the wrong title or even retrieve nothing at all! In this case, the JIT-compiled regular expressions can trip over themselves if they don’t fully read certain characters during case-less matching. The out-of-bounds read vulnerability arises from a unicode property matching issue during case-less matching in JIT-compiled regular expressions, specifically in the PCRE2 library's 'compile_xclass_matchingpath()' function. This flaw can lead to unintended memory access, potentially revealing sensitive data.

What to do

This vulnerability could allow attackers to gain access to sensitive information or crash systems through unexpected behaviors. While the exploit isn't currently known, the potential consequences are definitely something to keep an eye on—better to patch it than to find out the hard way! To mitigate this issue, update your PCRE2 library to the latest version where this vulnerability is resolved. Regularly audit your dependencies and test your applications to ensure they handle unicode properties correctly. Staying proactive is key! You’ve got this! With these steps, you’re on your way to keeping your systems secure and resilient! 🛡️

The record
Technical detail
CVSS
Not scored
CVSS v4.0
Not supplied
EPSS
0.03366 · 88.7th percentile
Weakness
CWE-125 · Out-of-bounds Read
Published
2022-05-16T00:00Z
EPSS history
Timeline
  • 16 MAY 00:00Z
    An out-of-bounds read vulnerability was discovered in the PCRE2 library in the compile_xclass_matchingpath() function of the pcre2_jit_compile.c file
    cvelistv5