Vulnerability Name:

CVE-2018-20657 (CCN-155039)

Assigned:2018-12-18
Published:2018-12-18
Updated:2019-11-06
Summary:The demangle_template function in cplus-dem.c in GNU libiberty, as distributed in GNU Binutils 2.31.1, has a memory leak via a crafted string, leading to a denial of service (memory consumption), as demonstrated by cxxfilt, a related issue to CVE-2018-12698.
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)
6.6 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:U/RC:R)
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
3.3 Low (CCN CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L)
2.9 Low (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L/E:U/RL:U/RC:R)
Exploitability Metrics:Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): Required
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Low
3.3 Low (REDHAT CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L)
2.9 Low (REDHAT Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L/E:U/RL:U/RC:R)
Exploitability Metrics:Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): Required
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): None
Integrity (I): None
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
1.7 Low (CCN CVSS v2 Vector: AV:L/AC:L/Au:S/C:N/I:N/A:P)
Exploitability Metrics:Access Vector (AV): Local
Access Complexity (AC): Low
Athentication (Au): Single_Instance
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Partial
Vulnerability Type:CWE-772
CWE-400
Vulnerability Consequences:Denial of Service
References:Source: MITRE
Type: CNA
CVE-2018-20657

Source: BID
Type: Third Party Advisory, VDB Entry
106444

Source: REDHAT
Type: UNKNOWN
RHSA-2019:3352

Source: XF
Type: UNKNOWN
gnubinutils-cve201820657-dos(155039)

Source: CCN
Type: GCC Bugzilla – Bug 88539
A memory leak issue was discovered in cplus-dem.c

Source: MISC
Type: Exploit, Issue Tracking, Third Party Advisory
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88539

Source: CONFIRM
Type: Third Party Advisory
https://support.f5.com/csp/article/K62602089

Source: CCN
Type: GNU Web site
GNU Binutils

Source: CCN
Type: IBM Security Bulletin 1143448 (Watson Studio Local)
Multiple Vulnerabilities in GNU Binutils affects Watson Studio Local

Source: CCN
Type: IBM Security Bulletin 6833582 (Cloud Pak for Security)
IBM Cloud Pak for Security is vulnerable to using components with known vulnerabilities

Vulnerable Configuration:Configuration 1:
  • cpe:/a:gnu:binutils:2.31.1:*:*:*:*:*:*:*

    • Configuration 2:
  • cpe:/a:f5:traffix_signaling_delivery_controller:4.4.0:*:*:*:*:*:*:*
  • OR cpe:/a:f5:traffix_signaling_delivery_controller:*:*:*:*:*:*:*:* (Version >= 5.0.0 and <= 5.1.0)

    • Configuration RedHat 1:
  • cpe:/a:redhat:enterprise_linux:8:*:*:*:*:*:*:*

    • Configuration RedHat 2:
  • cpe:/a:redhat:enterprise_linux:8::appstream:*:*:*:*:*

    • Configuration CCN 1:
  • cpe:/a:gnu:binutils:2.31.1:*:*:*:*:*:*:*
  • AND
  • cpe:/a:ibm:watson_studio_local:1.2.3:*:*:*:*:*:*:*
  • OR cpe:/a:ibm:cloud_pak_for_security:1.10.0.0:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    Oval Definitions
    Definition IDClassTitleLast Modified
    oval:com.redhat.rhsa:def:20193352
    P
    		RHSA-2019:3352: gdb security, bug fix, and enhancement update (Low)
    2019-11-05
    oval:com.ubuntu.disco:def:2018206570000000
    V
    		CVE-2018-20657 on Ubuntu 19.04 (disco) - low.
    2019-01-02
    oval:com.ubuntu.bionic:def:201820657000
    V
    		CVE-2018-20657 on Ubuntu 18.04 LTS (bionic) - low.
    2019-01-02
    oval:com.ubuntu.cosmic:def:2018206570000000
    V
    		CVE-2018-20657 on Ubuntu 18.10 (cosmic) - low.
    2019-01-02
    oval:com.ubuntu.cosmic:def:201820657000
    V
    		CVE-2018-20657 on Ubuntu 18.10 (cosmic) - low.
    2019-01-02
    oval:com.ubuntu.bionic:def:2018206570000000
    V
    		CVE-2018-20657 on Ubuntu 18.04 LTS (bionic) - negligible.
    2019-01-02
    oval:com.ubuntu.trusty:def:201820657000
    V
    		CVE-2018-20657 on Ubuntu 14.04 LTS (trusty) - low.
    2019-01-02
    oval:com.ubuntu.xenial:def:2018206570000000
    V
    		CVE-2018-20657 on Ubuntu 16.04 LTS (xenial) - negligible.
    2019-01-02
    oval:com.ubuntu.xenial:def:201820657000
    V
    		CVE-2018-20657 on Ubuntu 16.04 LTS (xenial) - low.
    2019-01-02
    BACK
    gnu binutils 2.31.1
    f5 traffix signaling delivery controller 4.4.0
    f5 traffix signaling delivery controller *
    gnu binutils 2.31.1
    ibm watson studio local 1.2.3
    ibm cloud pak for security 1.10.0.0