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debianDebianDEBIAN:DLA-950-1:6137B
HistoryMay 23, 2017 - 8:37 p.m.

[SECURITY] [DLA 950-1] libtasn1-3 security update

2017-05-2320:37:03
lists.debian.org
14

6.8 Medium

CVSS2

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

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

8.8 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

9.1 High

AI Score

Confidence

High

0.002 Low

EPSS

Percentile

61.1%

Package : libtasn1-3
Version : 2.13-2+deb7u4
CVE ID : CVE-2017-6891

Secunia Research has discovered multiple vulnerabilities in GnuTLS
libtasn1, which can be exploited by malicious people to compromise
a vulnerable system.

Two errors in the "asn1_find_node()" function (lib/parser_aux.c)
can be exploited to cause a stacked-based buffer overflow.

Successful exploitation of the vulnerabilities allows execution
of arbitrary code but requires tricking a user into processing
a specially crafted assignments file by e.g. asn1Coding utility.

For Debian 7 "Wheezy", this problem has been fixed in version
2.13-2+deb7u4.

We recommend that you upgrade your libtasn1-3 packages.

Further information about Debian LTS security advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://wiki.debian.org/LTS

6.8 Medium

CVSS2

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

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

8.8 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

9.1 High

AI Score

Confidence

High

0.002 Low

EPSS

Percentile

61.1%