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Fencer Vulns
high 7.5

CVE-2005-0468 in the critical feed json

Heap-based buffer overflow in the env_opt_add function in telnet.c for various BSD-based Telnet clients allows remote attackers to execute…

published 2005-03-28 21 y ago modified 2026-06-16 4 mo ago also EUVD-2005-0469

cvss
7.5
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
27.1%
EPSS 27.1% chance of exploitation in 30 days, percentile 98%
public exploits
1
Exploit-DB

Summary

Heap-based buffer overflow in the env_opt_add function in telnet.c for various BSD-based Telnet clients allows remote attackers to execute arbitrary code via responses that contain a large number of characters that require escaping, which consumers more memory than allocated.

Patch / fix

  • krb5 Debian 14, Debian 13, Debian 12 1.3.6-2

debian advisories DEBIAN-CVE-2005-0468

  • krb5 RHEL 3 1.2.7-42
  • krb5 RHEL 4 1.3.4-12
  • krb5-libs RHEL 3 1.2.7-42
  • krb5-libs RHEL 4 1.3.4-12
  • krb5-server RHEL 3 1.2.7-42
  • krb5-server RHEL 4 1.3.4-12
  • krb5-workstation RHEL 3 1.2.7-42
  • krb5-workstation RHEL 4 1.3.4-12

red hat advisories RHSA-2005:330RHSA-2005:327

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-2005-0468 updated

security flaw

  • Red Hat Desktop version 3 krb5 1.2.7-42, krb5-libs 1.2.7-42, krb5-server 1.2.7-42, telnet 0.17-26.EL3.2, krb5-workstation 1.2.7-42, telnet-server 0.17-26.EL3.2 Red Hat Enterprise Linux AS version 3 krb5 1.2.7-42, krb5-libs 1.2.7-42, krb5-server 1.2.7-42, telnet 0.17-26.EL3.2, krb5-workstation 1.2.7-42, telnet-server 0.17-26.EL3.2 Red Hat Enterprise Linux AS version 4 krb5 1.3.4-12, krb5-libs 1.3.4-12, krb5-server 1.3.4-12, telnet 0.17-31.EL4.2, krb5-workstation 1.3.4-12, telnet-server 0.17-31.EL4.2 Red Hat Enterprise Linux Desktop version 4 krb5 1.3.4-12, krb5-libs 1.3.4-12, krb5-server 1.3.4-12, telnet 0.17-31.EL4.2, krb5-workstation 1.3.4-12, telnet-server 0.17-31.EL4.2 Red Hat Enterprise Linux ES version 3 krb5 1.2.7-42, krb5-libs 1.2.7-42, krb5-server 1.2.7-42, telnet 0.17-26.EL3.2, krb5-workstation 1.2.7-42, telnet-server 0.17-26.EL3.2 Red Hat Enterprise Linux ES version 4 krb5 1.3.4-12, krb5-libs 1.3.4-12, krb5-server 1.3.4-12, telnet 0.17-31.EL4.2, krb5-workstation 1.3.4-12, telnet-server 0.17-31.EL4.2
    +2 more products
    Red Hat Enterprise Linux WS version 3 krb5 1.2.7-42, krb5-libs 1.2.7-42, krb5-server 1.2.7-42, telnet 0.17-26.EL3.2, krb5-workstation 1.2.7-42, telnet-server 0.17-26.EL3.2 Red Hat Enterprise Linux WS version 4 krb5 1.3.4-12, krb5-libs 1.3.4-12, krb5-server 1.3.4-12, telnet 0.17-31.EL4.2, krb5-workstation 1.3.4-12, telnet-server 0.17-31.EL4.2
    fixed: vendor fix RHSA-2005:330

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-25303)
  2. Published

Exploit prediction

27.07% chance of exploitation in the next 30 days, higher than 98% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • EDB-25303 Multiple Vendor Telnet Client - Env_opt_add Heap Buffer Overflow dos, 2005-03-28

CVSS scores

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

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.