ArchLinuxASA-201707-21[ASA-201707-21] c-ares: information disclosure
7.5 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
5 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
NONE
AV:N/AC:L/Au:N/C:P/I:N/A:N
0.002 Low
EPSS
Percentile
60.9%
Arch Linux Security Advisory ASA-201707-21
Severity: Medium
Date : 2017-07-18
CVE-ID : CVE-2017-1000381
Package : c-ares
Type : information disclosure
Remote : Yes
Link : https://security.archlinux.org/AVG-315
Summary
The package c-ares before version 1.13.0-1 is vulnerable to information
disclosure.
Resolution
Upgrade to 1.13.0-1.
pacman -Syu “c-ares>=1.13.0-1”
The problem has been fixed upstream in version 1.13.0.
Workaround
None.
Description
A out-of-bounds read has been found in c-ares < 1.13.0. The
ares_parse_naptr_reply() function, which is used for parsing NAPTR
responses, could be triggered to read memory outside of the given input
buffer if the passed in DNS response packet was crafted in a particular
way.
Impact
A remote attacker might be able to access sensitive information by
responding to a DNS query with a crafted response packet.
References
https://c-ares.haxx.se/adv_20170620.html
https://security.archlinux.org/CVE-2017-1000381
Related
7.5 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
5 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
NONE
AV:N/AC:L/Au:N/C:P/I:N/A:N
0.002 Low
EPSS
Percentile
60.9%