CVSS2
Attack Vector
LOCAL
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:L/AC:L/Au:N/C:C/I:C/A:C
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
AI Score
Confidence
High
EPSS
Percentile
41.8%
It was discovered that bsd-mailx contained a feature that allowed
syntactically valid email addresses to be treated as shell commands. A
remote attacker could possibly use this issue with a valid email address to
execute arbitrary commands.
This functionality has now been disabled by default, and can be re-enabled
with the “expandaddr” configuration option. This update alone does not
remove all possibilities of command execution. In environments where
scripts use mailx to process arbitrary email addresses, it is recommended
to modify them to use a “–” separator before the address to properly
handle those that begin with “-”. In addition, specifying sendmail options
after the “–” separator is no longer supported, existing scripts may need
to be modified to use the “-a” option instead.
OS | Version | Architecture | Package | Version | Filename |
---|---|---|---|---|---|
Ubuntu | 14.10 | noarch | bsd-mailx | < 8.1.2-0.20131005cvs-1ubuntu0.14.10.1 | UNKNOWN |
Ubuntu | 14.04 | noarch | bsd-mailx | < 8.1.2-0.20131005cvs-1ubuntu0.14.04.1 | UNKNOWN |
Ubuntu | 12.04 | noarch | bsd-mailx | < 8.1.2-0.20111106cvs-1ubuntu0.1 | UNKNOWN |
Ubuntu | 10.04 | noarch | bsd-mailx | < 8.1.2-0.20090911cvs-2ubuntu1.1 | UNKNOWN |
CVSS2
Attack Vector
LOCAL
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:L/AC:L/Au:N/C:C/I:C/A:C
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
AI Score
Confidence
High
EPSS
Percentile
41.8%