Vulnerability Name:

CVE-2020-16088 (CCN-186026)

Assigned:2020-07-27
Published:2020-07-27
Updated:2022-01-04
Summary:iked in OpenIKED, as used in OpenBSD through 6.7, allows authentication bypass because ca.c has the wrong logic for checking whether a public key matches.
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)
8.6 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: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): High
Integrity (I): High
Availibility (A): High
9.8 Critical (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)
8.6 High (CCN 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: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): High
Integrity (I): High
Availibility (A): High
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
10.0 High (CCN CVSS v2 Vector: AV:N/AC:L/Au:N/C:C/I:C/A:C)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Athentication (Au): None
Impact Metrics:Confidentiality (C): Complete
Integrity (I): Complete
Availibility (A): Complete
Vulnerability Type:CWE-287
Vulnerability Consequences:Bypass Security
References:Source: MITRE
Type: CNA
CVE-2020-16088

Source: XF
Type: UNKNOWN
openbsd-cve202016088-sec-bypass(186026)

Source: CCN
Type: OpenBSD Web site
In iked, incorrect use of EVP_PKEY_cmp allows an authentication bypass

Source: CONFIRM
Type: Exploit, Vendor Advisory
https://ftp.openbsd.org/pub/OpenBSD/patches/6.7/common/014_iked.patch.sig

Source: MISC
Type: Patch, Third Party Advisory
https://github.com/openbsd/src/commit/7afb2d41c6d373cf965285840b85c45011357115

Source: CCN
Type: openiked GIT Repository
openiked

Source: MISC
Type: Patch, Third Party Advisory
https://github.com/xcllnt/openiked/commits/master

Source: MISC
Type: Vendor Advisory
https://www.openiked.org/security.html

Source: CCN
Type: WhiteSource Vulnerability Database
CVE-2020-16088

Vulnerable Configuration:Configuration 1:
  • cpe:/o:openbsd:openbsd:*:*:*:*:*:*:*:* (Version <= 6.7)

    • Configuration CCN 1:
  • cpe:/o:openbsd:openbsd:6.7:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    BACK
    openbsd openbsd *
    openbsd openbsd 6.7