Veracode Vulnerability DatabaseVERACODE:33645Remote Code Execution (RCE)
9.8 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
10 High
CVSS2
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:N/AC:L/Au:N/C:C/I:C/A:C
telnet is vulnerable to remote code execution. The vulnerability exists due to a lack of check on the boundary of Nextitem() Function. This vulnerability exists in the telnet-server package, not in the telnet client-side package.
References
access.redhat.com/errata/RHSA-2022:0011
access.redhat.com/security/updates/classification/#important
appgateresearch.blogspot.com/2020/02/bravestarr-fedora-31-netkit-telnetd_28.html
bugzilla.redhat.com/show_bug.cgi?id=1811673
github.com/krb5/krb5-appl/blob/d00cd671dfe945791b33d4f1f6a5c57ae1667ef8/telnet/telnetd/utility.c#L205-L216
lists.debian.org/debian-lts-announce/2020/05/msg00012.html
lists.debian.org/debian-lts-announce/2020/08/msg00038.html
lists.fedoraproject.org/archives/list/[email protected]/message/7FMTRRQTYKWZD2GMXX3GLZV46OLPCLVK/
lists.fedoraproject.org/archives/list/[email protected]/message/HLU6FL24BSQQEB2SJC26NLJ2MANQDA7M/
lists.fedoraproject.org/archives/list/[email protected]/message/K3VJ6V2Z3JRNJOBVHSOPMAC76PSSKG6A/
tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-telnetd-EFJrEzPx
www.arista.com/en/support/advisories-notices/security-advisories/10702-security-advisory-48
www.oracle.com/security-alerts/cpuApr2021.html
Related
9.8 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
10 High
CVSS2
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:N/AC:L/Au:N/C:C/I:C/A:C