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Fencer Intel
medium 4.3

CVE-2010-4777 json

The Perl_reg_numbered_buff_fetch function in Perl 5.10.0, 5.12.0, 5.14.0, and other versions, when running with debugging enabled, allows c…

published 12y ago modified 4mo ago also EUVD-2010-4742

cvss
4.3
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
6.0%
EPSS 6.0% chance of exploitation in 30 days, percentile 93%
public exploits
1
Exploit-DB

Summary

The Perl_reg_numbered_buff_fetch function in Perl 5.10.0, 5.12.0, 5.14.0, and other versions, when running with debugging enabled, allows context-dependent attackers to cause a denial of service (assertion failure and application exit) via crafted input that is not properly handled when using certain regular expressions, as demonstrated by causing SpamAssassin and OCSInventory to crash.

Patch / fix

  • perl Debian 14, Debian 13, Debian 12 5.20.1-1

debian advisories DEBIAN-CVE-2010-4777

  • perl openSUSE Tumbleweed 5.24.0-3.5

opensuse advisories openSUSE-SU-2024:10449-1

Is CVE-2010-4777 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

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Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2010-4777 updated cvss 5.0

perl: assertion failure with certain regular expressions

  • Red Hat Enterprise Linux 4 perl Red Hat Enterprise Linux 5 perl Red Hat Enterprise Linux 6 perl, perl-CGI, perl-core, perl-CPAN, perl-libs, perl-parent, +39 more
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Timeline

  1. First public exploit (EDB-35489)
  2. Published

Exploit prediction

6.02% chance of exploitation in the next 30 days, higher than 93% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • EDB-35489 Perl 5.x - 'Perl_reg_numbered_buff_fetch()' Remote Denial of Service dos, 2011-03-23

CVSS scores

assigned by version score vector
NVD 2.0 4.3 AV:N/AC:M/Au:N/C:N/I:N/A:P

Classification

Weakness
  • CWE-20 Improper Input Validation

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.