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Fencer Vulns
medium 4.3

CVE-2007-3377 json

Header.pm in Net::DNS before 0.60, a Perl module, (1) generates predictable sequence IDs with a fixed increment and (2) can use the same st…

published 2007-06-25 19 y ago modified 2026-06-16 4 mo ago also EUVD-2007-3367

cvss
4.3
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
2.0%
EPSS 2.0% chance of exploitation in 30 days, percentile 81%
public exploits
0
none known

Summary

Header.pm in Net::DNS before 0.60, a Perl module, (1) generates predictable sequence IDs with a fixed increment and (2) can use the same starting ID for all child processes of a forking server, which allows remote attackers to spoof DNS responses, as originally reported for qpsmtp and spamassassin.

Patch / fix

  • libnet-dns-perl Debian 14, Debian 13, Debian 12 0.60-1

debian advisories DEBIAN-CVE-2007-3377

  • perl-Net-DNS RHEL 4 0.48-2.el4
  • perl-Net-DNS RHEL 3 0.31-4.el3
  • perl-Net-DNS RHEL 5 0.59-3.el5

red hat advisories RHSA-2007:0675RHSA-2007:0674

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-2007-3377 updated

perl-Net-DNS security issue

  • Red Hat Desktop version 3 perl-Net-DNS 0.31-4.el3 Red Hat Enterprise Linux (v. 5 server) perl-Net-DNS 0.59-3.el5 Red Hat Enterprise Linux AS version 3 perl-Net-DNS 0.31-4.el3
    fixed: vendor fix RHSA-2007:0674
  • Red Hat Enterprise Linux AS version 4 perl-Net-DNS 0.48-2.el4
    fixed: vendor fix RHSA-2007:0675
  • Red Hat Enterprise Linux Desktop (v. 5 client) perl-Net-DNS 0.59-3.el5
    fixed: vendor fix RHSA-2007:0674
  • Red Hat Enterprise Linux Desktop version 4 perl-Net-DNS 0.48-2.el4
    fixed: vendor fix RHSA-2007:0675
  • Red Hat Enterprise Linux ES version 3 perl-Net-DNS 0.31-4.el3
    fixed: vendor fix RHSA-2007:0674
  • Red Hat Enterprise Linux ES version 4 perl-Net-DNS 0.48-2.el4
    fixed: vendor fix RHSA-2007:0675
  • Red Hat Enterprise Linux WS version 3 perl-Net-DNS 0.31-4.el3
    fixed: vendor fix RHSA-2007:0674
  • Red Hat Enterprise Linux WS version 4 perl-Net-DNS 0.48-2.el4
    fixed: vendor fix RHSA-2007:0675

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

Exploit prediction

2.05% chance of exploitation in the next 30 days, higher than 81% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • nntp.perl.org http://www.nntp.perl.org/group/perl.qpsmtpd/2006/03/msg4810.html referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

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

References

Sources

Fencer Vulns 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.