Vulnerability Name:

CVE-2017-15650 (CCN-133862)

Assigned:2017-10-19
Published:2017-10-19
Updated:2017-11-08
Summary:musl libc before 1.1.17 has a buffer overflow via crafted DNS replies because dns_parse_callback in network/lookup_name.c does not restrict the number of addresses, and thus an attacker can provide an unexpected number by sending A records in a reply to an AAAA query.
CVSS v3 Severity:7.5 High (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
6.5 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/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): Unchanged
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): High
7.3 High (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L)
6.4 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/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): Low
Integrity (I): Low
Availibility (A): Low
CVSS v2 Severity:5.0 Medium (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
Authentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Partial
7.5 High (CCN CVSS v2 Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Athentication (Au): None
Impact Metrics:Confidentiality (C): Partial
Integrity (I): Partial
Availibility (A): Partial
Vulnerability Type:CWE-119
Vulnerability Consequences:Gain Access
References:Source: MITRE
Type: CNA
CVE-2017-15650

Source: CONFIRM
Type: Vendor Advisory
http://git.musl-libc.org/cgit/musl/commit/?id=45ca5d3fcb6f874bf5ba55d0e9651cef68515395

Source: CONFIRM
Type: Vendor Advisory
http://git.musl-libc.org/cgit/musl/tree/WHATSNEW

Source: CCN
Type: oss-sec Mailing List, Thu, 19 Oct 2017 16:17:57 -0400
CVE request: musl libc 1.1.16 and earlier dns buffer overflow

Source: CONFIRM
Type: Mailing List, Mitigation, Third Party Advisory
http://openwall.com/lists/oss-security/2017/10/19/5

Source: CCN
Type: IBM Security Bulletin 716653 (Cloud Private)
Multiple Security Vulnerabilities affect IBM Cloud Private

Source: CCN
Type: musl libc Web site
musl libc

Source: XF
Type: UNKNOWN
musllibc-cve201715650-bo(133862)

Vulnerable Configuration:Configuration 1:
  • cpe:/a:musl-libc:musl:*:*:*:*:*:*:*:* (Version <= 1.1.6)

    • * Denotes that component is vulnerable
    Oval Definitions
    Definition IDClassTitleLast Modified
    oval:com.ubuntu.xenial:def:2017156500000000
    V
    		CVE-2017-15650 on Ubuntu 16.04 LTS (xenial) - medium.
    2017-10-19
    oval:com.ubuntu.artful:def:201715650000
    V
    		CVE-2017-15650 on Ubuntu 17.10 (artful) - untriaged.
    2017-10-19
    oval:com.ubuntu.xenial:def:201715650000
    V
    		CVE-2017-15650 on Ubuntu 16.04 LTS (xenial) - medium.
    2017-10-19
    oval:com.ubuntu.disco:def:2017156500000000
    V
    		CVE-2017-15650 on Ubuntu 19.04 (disco) - medium.
    2017-10-19
    oval:com.ubuntu.bionic:def:201715650000
    V
    		CVE-2017-15650 on Ubuntu 18.04 LTS (bionic) - medium.
    2017-10-19
    oval:com.ubuntu.cosmic:def:2017156500000000
    V
    		CVE-2017-15650 on Ubuntu 18.10 (cosmic) - medium.
    2017-10-19
    oval:com.ubuntu.cosmic:def:201715650000
    V
    		CVE-2017-15650 on Ubuntu 18.10 (cosmic) - medium.
    2017-10-19
    oval:com.ubuntu.bionic:def:2017156500000000
    V
    		CVE-2017-15650 on Ubuntu 18.04 LTS (bionic) - medium.
    2017-10-19
    oval:com.ubuntu.trusty:def:201715650000
    V
    		CVE-2017-15650 on Ubuntu 14.04 LTS (trusty) - medium.
    2017-10-19
    BACK
    musl-libc musl *