10 High
CVSS2
Attack Vector
NETWORK
Attack 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
0.968 High
EPSS
Percentile
99.7%
Heimdal is a free implementation of Kerberos 5.
A boundary error in the “encrypt_keyid()” function in appl/telnet/libtelnet/encrypt.c of the telnet daemon and client could cause a buffer overflow.
An unauthenticated remote attacker may be able to execute arbitrary code with the privileges of the user running the telnet daemon or client, or cause Denial of Service.
There is no known workaround at this time.
All Heimdal users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=app-crypt/heimdal-1.5.1-r1"
OS | Version | Architecture | Package | Version | Filename |
---|---|---|---|---|---|
Gentoo | any | all | app-crypt/heimdal | < 1.5.1-r1 | UNKNOWN |