Vulnerability Name:

CVE-2018-9127 (CCN-141146)

Assigned:2018-03-29
Published:2018-03-29
Updated:2018-05-15
Summary:Botan 2.2.0 - 2.4.0 (fixed in 2.5.0) improperly handled wildcard certificates and could accept certain certificates as valid for hostnames when, under RFC 6125 rules, they should not match. This only affects certificates issued to the same domain as the host, so to impersonate a host one must already have a wildcard certificate matching other hosts in the same domain. For example, b*.example.com would match some hostnames that do not begin with a 'b' character.
CVSS v3 Severity:9.8 Critical (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)
8.5 High (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/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): High
Integrity (I): High
Availibility (A): High
7.5 High (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N)
6.5 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N/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): High
Availibility (A): None
CVSS v2 Severity:7.5 High (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
Authentication (Au): None
Impact Metrics:Confidentiality (C): Partial
Integrity (I): Partial
Availibility (A): Partial
7.8 High (CCN CVSS v2 Vector: AV:N/AC:L/Au:N/C:N/I:C/A:N)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Athentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): Complete
Availibility (A): None
Vulnerability Type:CWE-295
Vulnerability Consequences:Bypass Security
References:Source: MITRE
Type: CNA
CVE-2018-9127

Source: CCN
Type: Botan Web site
Botan

Source: MISC
Type: Third Party Advisory
https://botan.randombit.net/security.html

Source: XF
Type: UNKNOWN
botan-cve20189127-sec-bypass(141146)

Vulnerable Configuration:Configuration 1:
  • cpe:/a:botan_project:botan:*:*:*:*:*:*:*:* (Version >= 2.2.0 and <= 2.4.0)

    • * Denotes that component is vulnerable
    Oval Definitions
    Definition IDClassTitleLast Modified
    oval:org.opensuse.security:def:111882
    P
    		Botan-2.18.1-1.3 on GA media (Moderate)
    2022-01-17
    oval:org.opensuse.security:def:105462
    P
    		Botan-2.18.1-1.3 on GA media (Moderate)
    2021-10-01
    oval:com.ubuntu.bionic:def:20189127000
    V
    		CVE-2018-9127 on Ubuntu 18.04 LTS (bionic) - untriaged.
    2018-04-02
    oval:com.ubuntu.disco:def:201891270000000
    V
    		CVE-2018-9127 on Ubuntu 19.04 (disco) - untriaged.
    2018-04-02
    oval:com.ubuntu.cosmic:def:20189127000
    V
    		CVE-2018-9127 on Ubuntu 18.10 (cosmic) - untriaged.
    2018-04-02
    oval:com.ubuntu.cosmic:def:201891270000000
    V
    		CVE-2018-9127 on Ubuntu 18.10 (cosmic) - untriaged.
    2018-04-02
    oval:com.ubuntu.bionic:def:201891270000000
    V
    		CVE-2018-9127 on Ubuntu 18.04 LTS (bionic) - untriaged.
    2018-04-02
    BACK
    botan_project botan *