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Fencer Intel
high 7.5

CVE-2011-3372 json

imap/nntpd.c in the NNTP server (nntpd) for Cyrus IMAPd 2.4.x before 2.4.12 allows remote attackers to bypass authentication by sending an…

published 2011-12-24 14 y ago modified 2026-06-16 4 mo ago also EUVD-2011-3336

cvss
7.5
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
3.3%
EPSS 3.3% chance of exploitation in 30 days, percentile 88%
public exploits
0
none known

Summary

imap/nntpd.c in the NNTP server (nntpd) for Cyrus IMAPd 2.4.x before 2.4.12 allows remote attackers to bypass authentication by sending an AUTHINFO USER command without sending an additional AUTHINFO PASS command.

Patch / fix

  • cyrus-imapd RHEL 4 2.2.12-17.el4
  • cyrus-imapd RHEL 5 2.3.7-12.el5_7.2
  • cyrus-imapd RHEL 6 2.3.16-6.el6_1.4
  • perl-Cyrus RHEL 4 2.2.12-17.el4
  • cyrus-imapd-nntp RHEL 4 2.2.12-17.el4
  • cyrus-imapd-perl RHEL 5 2.3.7-12.el5_7.2
  • cyrus-imapd-utils RHEL 4 2.2.12-17.el4
  • cyrus-imapd-utils RHEL 5 2.3.7-12.el5_7.2

red hat advisories RHSA-2011:1508

  • cyrus-imapd openSUSE Tumbleweed 2.4.18-3.4

opensuse advisories openSUSE-SU-2024:10015-1

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-2011-3372 updated cvss 5.8

cyrus-imapd: nntpd authentication bypass

  • Red Hat Enterprise Linux (v. 5 server) cyrus-imapd 2.3.7-12.el5_7.2, cyrus-imapd-perl 2.3.7-12.el5_7.2, cyrus-imapd-utils 2.3.7-12.el5_7.2 Red Hat Enterprise Linux AS version 4 perl-Cyrus 2.2.12-17.el4, cyrus-imapd 2.2.12-17.el4, cyrus-imapd-nntp 2.2.12-17.el4, cyrus-imapd-utils 2.2.12-17.el4, cyrus-imapd-murder 2.2.12-17.el4 Red Hat Enterprise Linux Desktop version 4 perl-Cyrus 2.2.12-17.el4, cyrus-imapd 2.2.12-17.el4, cyrus-imapd-nntp 2.2.12-17.el4, cyrus-imapd-utils 2.2.12-17.el4, cyrus-imapd-murder 2.2.12-17.el4 Red Hat Enterprise Linux ES version 4 perl-Cyrus 2.2.12-17.el4, cyrus-imapd 2.2.12-17.el4, cyrus-imapd-nntp 2.2.12-17.el4, cyrus-imapd-utils 2.2.12-17.el4, cyrus-imapd-murder 2.2.12-17.el4 Red Hat Enterprise Linux Server (v. 6) cyrus-imapd 2.3.16-6.el6_1.4, cyrus-imapd-utils 2.3.16-6.el6_1.4 Red Hat Enterprise Linux Server Optional (v. 6) cyrus-imapd 2.3.16-6.el6_1.4, cyrus-imapd-utils 2.3.16-6.el6_1.4
    +2 more products
    Red Hat Enterprise Linux WS version 4 perl-Cyrus 2.2.12-17.el4, cyrus-imapd 2.2.12-17.el4, cyrus-imapd-nntp 2.2.12-17.el4, cyrus-imapd-utils 2.2.12-17.el4, cyrus-imapd-murder 2.2.12-17.el4 Red Hat RHEL Desktop Workstation (v. 5 client) cyrus-imapd 2.3.7-12.el5_7.2, cyrus-imapd-perl 2.3.7-12.el5_7.2, cyrus-imapd-utils 2.3.7-12.el5_7.2
    fixed: vendor fix RHSA-2011:1508

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

3.29% chance of exploitation in the next 30 days, higher than 88% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 2.0 7.5 AV:N/AC:L/Au:N/C:P/I:P/A:P

Classification

Weakness

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.