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ubuntucveUbuntu.comUB:CVE-2017-16944
HistoryNov 27, 2017 - 12:00 a.m.

CVE-2017-16944

2017-11-2700:00:00
ubuntu.com
ubuntu.com
19

CVSS2

5

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

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

CVSS3

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS

0.851

Percentile

98.5%

The receive_msg function in receive.c in the SMTP daemon in Exim 4.88 and
4.89 allows remote attackers to cause a denial of service (infinite loop
and stack exhaustion) via vectors involving BDAT commands and an improper
check for a ‘.’ character signifying the end of the content, related to the
bdat_getc function.

Bugs

Notes

Author Note
mdeslaur only affects Exim 4.88 or newer
OSVersionArchitecturePackageVersionFilename
ubuntu17.10noarchexim4< 4.89-5ubuntu1.2UNKNOWN
ubuntu17.04noarchexim4< 4.88-5ubuntu1.3UNKNOWN

CVSS2

5

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

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

CVSS3

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS

0.851

Percentile

98.5%