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osvGoogleOSV:DLA-114-1
HistoryDec 17, 2014 - 12:00 a.m.

heirloom-mailx - security update

2014-12-1700:00:00
Google
osv.dev
14

7.8 High

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

7.5 High

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:N/AC:L/Au:N/C:P/I:P/A:P

0.031 Low

EPSS

Percentile

91.1%

Two security vulnerabilities were discovered in Heirloom mailx, an
implementation of the mail command:

  • CVE-2004-2771
    mailx interprets shell meta-characters in certain email
    addresses.
  • CVE-2014-7844
    An unexpected feature of mailx treats syntactically valid email
    addresses as shell commands to execute.

Shell command execution can be re-enabled using the expandaddr
option.

Note that this security update does not remove all mailx facilities
for command execution, though. Scripts which send mail to addresses
obtained from an untrusted source (such as a web form) should use the
“–” separator before the email addresses (which was fixed to work
properly in this update), or they should be changed to invoke
“mail -t” or “sendmail -i -t” instead, passing the recipient addresses
as part of the mail header.

For the oldstable distribution (squeeze), these problems have been fixed in
version 12.4-2+deb6u1.

We recommend that you upgrade your heirloom-mailx packages.

CPENameOperatorVersion
heirloom-mailxeq12.4-2

7.8 High

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

7.5 High

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:N/AC:L/Au:N/C:P/I:P/A:P

0.031 Low

EPSS

Percentile

91.1%