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archlinuxArchLinuxASA-201708-10
HistoryAug 14, 2017 - 12:00 a.m.

[ASA-201708-10] libytnef: arbitrary code execution

2017-08-1400:00:00
security.archlinux.org
4

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:3.0/AV:N/AC:L/PR:N/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

0.003 Low

EPSS

Percentile

70.2%

Arch Linux Security Advisory ASA-201708-10

Severity: High
Date : 2017-08-14
CVE-ID : CVE-2017-9058
Package : libytnef
Type : arbitrary code execution
Remote : Yes
Link : https://security.archlinux.org/AVG-275

Summary

The package libytnef before version 1.9.2-2 is vulnerable to arbitrary
code execution.

Resolution

Upgrade to 1.9.2-2.

pacman -Syu “libytnef>=1.9.2-2”

The problem has been fixed upstream but no release is available yet.

Workaround

None.

Description

A heap-buffer-overflow vulnerability has been found in the libytnef in
the lib/ytnef.c module.

Impact

A remote attacker can execute arbitrary code on the affected host via a
crafted tnef file.

References

https://github.com/bingosxs/fuzzdata/blob/master/ytnef-1.9/TNEFFreeMapiProps-Invalid-read.tnef?raw=true
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=862556
https://security.archlinux.org/CVE-2017-9058

OSVersionArchitecturePackageVersionFilename
ArchLinuxanyanylibytnef< 1.9.2-2UNKNOWN

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:3.0/AV:N/AC:L/PR:N/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

0.003 Low

EPSS

Percentile

70.2%