Vulnerability Name:

CVE-2015-8702 (CCN-110085)

Assigned:2015-12-29
Published:2015-12-29
Updated:2020-09-14
Summary:The DNS::GetResult function in dns.cpp in InspIRCd before 2.0.19 allows remote DNS servers to cause a denial of service (netsplit) via an invalid character in a PTR response, as demonstrated by a "\032" (whitespace) character in a hostname.
CVSS v3 Severity:8.6 High (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H)
7.5 High (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Changed
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): High
5.3 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L)
4.6 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Low
CVSS v2 Severity:7.8 High (CVSS v2 Vector: AV:N/AC:L/Au:N/C:N/I:N/A:C)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Authentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Complete
5.0 Medium (CCN CVSS v2 Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Athentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Partial
Vulnerability Type:CWE-20
Vulnerability Consequences:Denial of Service
References:Source: MITRE
Type: CNA
CVE-2015-8702

Source: CCN
Type: oss-sec Mailing List, Tue, 29 Dec 2015 11:31:04 -0500 (EST)
Re: Inspircd <2.0.19 DoS

Source: DEBIAN
Type: Vendor Advisory
DSA-3527

Source: CONFIRM
Type: Vendor Advisory
http://www.inspircd.org/2015/04/16/v2019-released.html

Source: XF
Type: UNKNOWN
inspircd-cve20158702-dos(110085)

Source: CCN
Type: inspircd GIT Repository
Reject replies to DNS PTR requests that contain invalid characters

Source: CONFIRM
Type: Exploit
https://github.com/inspircd/inspircd/commit/6058483d9fbc1b904d5ae7cfea47bfcde5c5b559

Source: CONFIRM
Type: Exploit
https://github.com/inspircd/inspircd/issues/1033

Source: GENTOO
Type: UNKNOWN
GLSA-201512-13

Vulnerable Configuration:Configuration 1:
  • cpe:/o:debian:debian_linux:7.0:*:*:*:*:*:*:*
  • OR cpe:/o:debian:debian_linux:8.0:*:*:*:*:*:*:*

    • Configuration 2:
  • cpe:/a:inspircd:inspircd:*:*:*:*:*:*:*:* (Version <= 2.0.18)

    • * Denotes that component is vulnerable
    Oval Definitions
    Definition IDClassTitleLast Modified
    oval:org.cisecurity:def:600
    P
    		DSA-3527-1 -- inspircd -- security update
    2016-07-01
    oval:com.ubuntu.precise:def:20158702000
    V
    		CVE-2015-8702 on Ubuntu 12.04 LTS (precise) - medium.
    2016-04-12
    oval:com.ubuntu.xenial:def:201587020000000
    V
    		CVE-2015-8702 on Ubuntu 16.04 LTS (xenial) - medium.
    2016-04-12
    oval:com.ubuntu.trusty:def:20158702000
    V
    		CVE-2015-8702 on Ubuntu 14.04 LTS (trusty) - medium.
    2016-04-12
    oval:com.ubuntu.xenial:def:20158702000
    V
    		CVE-2015-8702 on Ubuntu 16.04 LTS (xenial) - medium.
    2016-04-12
    BACK
    debian debian linux 7.0
    debian debian linux 8.0
    inspircd inspircd *