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CVE-2005-0468

Heap-based buffer overflow in the env_opt_add function in telnet.c for various BSD-based Telnet...

7.5 HighPublic exploitFix available

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.

Exploit likelihood

27.1%Down 20.9 points since Feb 4, 2022
90%50%10%1%

What each source reports

NVD Score used 7.5

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.

Record
CVE-2005-0468
CVSS 2.0
7.5 HighAV:N/AC:L/Au:N/C:P/I:P/A:P
Updated
2026-11-02
CVE List No score

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.

Record
CVE-2005-0468
Updated
2026-11-02
EUVDEUVD-2005-0469 No score

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.

Record
EUVD-2005-0469
Updated
2026-11-03
GitHub AdvisoriesGHSA-7xw6-7f8j-hr4m No score

Heap-based buffer overflow in the env_opt_add function in telnet.c for various BSD-based Telnet...

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.

Record
GHSA-7xw6-7f8j-hr4m
Updated
2026-11-02
OSV No score

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.

Record
CVE-2005-0468
Updated
2026-11-02
OSVDEBIAN-CVE-2005-0468 No score

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.

Record
DEBIAN-CVE-2005-0468
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
krb5
Debian:12
 before 1.3.6-2
1.3.6-2
krb5
Debian:13
 before 1.3.6-2
1.3.6-2
krb5
Debian:14
 before 1.3.6-2
1.3.6-2
krb5
Debian:3.0
 before 1.2.4-5woody8, plus listed versions
1.2.4-5woody61.2.4-5woody7
1.2.4-5woody8
krb4
Debian:3.0
 before 1.1-8-2.4, plus listed versions
0.9.9-20.9.9-30.9.9-41.0-21.0-2.21.0-2.31.1-8-21.1-8-2.3
1.1-8-2.4
telnet
Red Hat:enterprise_linux:3::as
 before 1:0.17-26.EL3.2
1:0.17-26.EL3.2
telnet-debuginfo
Red Hat:enterprise_linux:3::as
 before 1:0.17-26.EL3.2
1:0.17-26.EL3.2
telnet-server
Red Hat:enterprise_linux:3::as
 before 1:0.17-26.EL3.2
1:0.17-26.EL3.2
telnet
Red Hat:enterprise_linux:3::desktop
 before 1:0.17-26.EL3.2
1:0.17-26.EL3.2
telnet-debuginfo
Red Hat:enterprise_linux:3::desktop
 before 1:0.17-26.EL3.2
1:0.17-26.EL3.2
Show 67 moreShow less
Affected packages
PackageAffectedFixed
telnet-server
Red Hat:enterprise_linux:3::desktop
 before 1:0.17-26.EL3.2
1:0.17-26.EL3.2
telnet
Red Hat:enterprise_linux:3::es
 before 1:0.17-26.EL3.2
1:0.17-26.EL3.2
telnet-debuginfo
Red Hat:enterprise_linux:3::es
 before 1:0.17-26.EL3.2
1:0.17-26.EL3.2
telnet-server
Red Hat:enterprise_linux:3::es
 before 1:0.17-26.EL3.2
1:0.17-26.EL3.2
telnet
Red Hat:enterprise_linux:3::ws
 before 1:0.17-26.EL3.2
1:0.17-26.EL3.2
telnet-debuginfo
Red Hat:enterprise_linux:3::ws
 before 1:0.17-26.EL3.2
1:0.17-26.EL3.2
telnet-server
Red Hat:enterprise_linux:3::ws
 before 1:0.17-26.EL3.2
1:0.17-26.EL3.2
telnet
Red Hat:enterprise_linux:4::as
 before 1:0.17-31.EL4.2
1:0.17-31.EL4.2
telnet-debuginfo
Red Hat:enterprise_linux:4::as
 before 1:0.17-31.EL4.2
1:0.17-31.EL4.2
telnet-server
Red Hat:enterprise_linux:4::as
 before 1:0.17-31.EL4.2
1:0.17-31.EL4.2
telnet
Red Hat:enterprise_linux:4::desktop
 before 1:0.17-31.EL4.2
1:0.17-31.EL4.2
telnet-debuginfo
Red Hat:enterprise_linux:4::desktop
 before 1:0.17-31.EL4.2
1:0.17-31.EL4.2
telnet-server
Red Hat:enterprise_linux:4::desktop
 before 1:0.17-31.EL4.2
1:0.17-31.EL4.2
telnet
Red Hat:enterprise_linux:4::es
 before 1:0.17-31.EL4.2
1:0.17-31.EL4.2
telnet-debuginfo
Red Hat:enterprise_linux:4::es
 before 1:0.17-31.EL4.2
1:0.17-31.EL4.2
telnet-server
Red Hat:enterprise_linux:4::es
 before 1:0.17-31.EL4.2
1:0.17-31.EL4.2
telnet
Red Hat:enterprise_linux:4::ws
 before 1:0.17-31.EL4.2
1:0.17-31.EL4.2
telnet-debuginfo
Red Hat:enterprise_linux:4::ws
 before 1:0.17-31.EL4.2
1:0.17-31.EL4.2
telnet-server
Red Hat:enterprise_linux:4::ws
 before 1:0.17-31.EL4.2
1:0.17-31.EL4.2
krb5
Red Hat:enterprise_linux:3::as
 before 0:1.2.7-42
0:1.2.7-42
krb5-debuginfo
Red Hat:enterprise_linux:3::as
 before 0:1.2.7-42
0:1.2.7-42
krb5-devel
Red Hat:enterprise_linux:3::as
 before 0:1.2.7-42
0:1.2.7-42
krb5-libs
Red Hat:enterprise_linux:3::as
 before 0:1.2.7-42
0:1.2.7-42
krb5-server
Red Hat:enterprise_linux:3::as
 before 0:1.2.7-42
0:1.2.7-42
krb5-workstation
Red Hat:enterprise_linux:3::as
 before 0:1.2.7-42
0:1.2.7-42
krb5
Red Hat:enterprise_linux:3::desktop
 before 0:1.2.7-42
0:1.2.7-42
krb5-debuginfo
Red Hat:enterprise_linux:3::desktop
 before 0:1.2.7-42
0:1.2.7-42
krb5-devel
Red Hat:enterprise_linux:3::desktop
 before 0:1.2.7-42
0:1.2.7-42
krb5-libs
Red Hat:enterprise_linux:3::desktop
 before 0:1.2.7-42
0:1.2.7-42
krb5-server
Red Hat:enterprise_linux:3::desktop
 before 0:1.2.7-42
0:1.2.7-42
krb5-workstation
Red Hat:enterprise_linux:3::desktop
 before 0:1.2.7-42
0:1.2.7-42
krb5
Red Hat:enterprise_linux:3::es
 before 0:1.2.7-42
0:1.2.7-42
krb5-debuginfo
Red Hat:enterprise_linux:3::es
 before 0:1.2.7-42
0:1.2.7-42
krb5-devel
Red Hat:enterprise_linux:3::es
 before 0:1.2.7-42
0:1.2.7-42
krb5-libs
Red Hat:enterprise_linux:3::es
 before 0:1.2.7-42
0:1.2.7-42
krb5-server
Red Hat:enterprise_linux:3::es
 before 0:1.2.7-42
0:1.2.7-42
krb5-workstation
Red Hat:enterprise_linux:3::es
 before 0:1.2.7-42
0:1.2.7-42
krb5
Red Hat:enterprise_linux:3::ws
 before 0:1.2.7-42
0:1.2.7-42
krb5-debuginfo
Red Hat:enterprise_linux:3::ws
 before 0:1.2.7-42
0:1.2.7-42
krb5-devel
Red Hat:enterprise_linux:3::ws
 before 0:1.2.7-42
0:1.2.7-42
krb5-libs
Red Hat:enterprise_linux:3::ws
 before 0:1.2.7-42
0:1.2.7-42
krb5-server
Red Hat:enterprise_linux:3::ws
 before 0:1.2.7-42
0:1.2.7-42
krb5-workstation
Red Hat:enterprise_linux:3::ws
 before 0:1.2.7-42
0:1.2.7-42
krb5
Red Hat:enterprise_linux:4::as
 before 0:1.3.4-12
0:1.3.4-12
krb5-debuginfo
Red Hat:enterprise_linux:4::as
 before 0:1.3.4-12
0:1.3.4-12
krb5-devel
Red Hat:enterprise_linux:4::as
 before 0:1.3.4-12
0:1.3.4-12
krb5-libs
Red Hat:enterprise_linux:4::as
 before 0:1.3.4-12
0:1.3.4-12
krb5-server
Red Hat:enterprise_linux:4::as
 before 0:1.3.4-12
0:1.3.4-12
krb5-workstation
Red Hat:enterprise_linux:4::as
 before 0:1.3.4-12
0:1.3.4-12
krb5
Red Hat:enterprise_linux:4::desktop
 before 0:1.3.4-12
0:1.3.4-12
krb5-debuginfo
Red Hat:enterprise_linux:4::desktop
 before 0:1.3.4-12
0:1.3.4-12
krb5-devel
Red Hat:enterprise_linux:4::desktop
 before 0:1.3.4-12
0:1.3.4-12
krb5-libs
Red Hat:enterprise_linux:4::desktop
 before 0:1.3.4-12
0:1.3.4-12
krb5-server
Red Hat:enterprise_linux:4::desktop
 before 0:1.3.4-12
0:1.3.4-12
krb5-workstation
Red Hat:enterprise_linux:4::desktop
 before 0:1.3.4-12
0:1.3.4-12
krb5
Red Hat:enterprise_linux:4::es
 before 0:1.3.4-12
0:1.3.4-12
krb5-debuginfo
Red Hat:enterprise_linux:4::es
 before 0:1.3.4-12
0:1.3.4-12
krb5-devel
Red Hat:enterprise_linux:4::es
 before 0:1.3.4-12
0:1.3.4-12
krb5-libs
Red Hat:enterprise_linux:4::es
 before 0:1.3.4-12
0:1.3.4-12
krb5-server
Red Hat:enterprise_linux:4::es
 before 0:1.3.4-12
0:1.3.4-12
krb5-workstation
Red Hat:enterprise_linux:4::es
 before 0:1.3.4-12
0:1.3.4-12
krb5
Red Hat:enterprise_linux:4::ws
 before 0:1.3.4-12
0:1.3.4-12
krb5-debuginfo
Red Hat:enterprise_linux:4::ws
 before 0:1.3.4-12
0:1.3.4-12
krb5-devel
Red Hat:enterprise_linux:4::ws
 before 0:1.3.4-12
0:1.3.4-12
krb5-libs
Red Hat:enterprise_linux:4::ws
 before 0:1.3.4-12
0:1.3.4-12
krb5-server
Red Hat:enterprise_linux:4::ws
 before 0:1.3.4-12
0:1.3.4-12
krb5-workstation
Red Hat:enterprise_linux:4::ws
 before 0:1.3.4-12
0:1.3.4-12

Public exploits

Links only. Every CVE stores no exploit code.

Public exploits
SourceLinkDate
Exploit-DBMultiple Vendor Telnet Client - Env_opt_add Heap Buffer Overflow2005-03-28

History

History
RecordedChangedSources
aliasesEUVD
first indexedCVE List, Exploit-DB, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2005-0468 is a high vulnerability (CVSS 7.5) in Ncsa Telnet, published March 28, 2005. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 27.1%, the 98th percentile. Fixed in krb5 1.3.6-2.

References

Show 35 moreShow less
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