Vulnerability Name:

CVE-2022-27882 (CCN-222632)

Assigned:2022-03-22
Published:2022-03-22
Updated:2022-05-12
Summary:slaacd in OpenBSD 6.9 and 7.0 before 2022-03-22 has an integer signedness error and resultant heap-based buffer overflow triggerable by a crafted IPv6 router advertisement.
Note: privilege separation and pledge can prevent exploitation.
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
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)
8.5 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: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
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
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-681
Vulnerability Consequences:Gain Access
References:Source: MITRE
Type: CNA
CVE-2022-27882

Source: CCN
Type: Quarkslab's Blog, Tue 22 March 2022
Heap Overflow in OpenBSD's slaacd via Router Advertisement

Source: MISC
Type: Exploit, Third Party Advisory
https://blog.quarkslab.com/heap-overflow-in-openbsds-slaacd-via-router-advertisement.html

Source: XF
Type: UNKNOWN
openbsd-cve202227882-bo(222632)

Source: CCN
Type: OpenBSD Web site
033_slaacd.patch.sig

Source: MISC
Type: Patch, Release Notes, Vendor Advisory
https://ftp.openbsd.org/pub/OpenBSD/patches/6.9/common/033_slaacd.patch.sig

Source: MISC
Type: Patch, Release Notes, Vendor Advisory
https://ftp.openbsd.org/pub/OpenBSD/patches/7.0/common/017_slaacd.patch.sig

Source: CONFIRM
Type: Third Party Advisory
https://security.netapp.com/advisory/ntap-20220506-0005/

Vulnerable Configuration:Configuration 1:
  • cpe:/o:openbsd:openbsd:6.9:*:*:*:*:*:*:*
  • OR cpe:/o:openbsd:openbsd:7.0:*:*:*:*:*:*:*

    • Configuration CCN 1:
  • cpe:/a:openbsd:openssh:6.9:-:*:*:*:*:*:*
  • OR cpe:/a:openbsd:openssh:7.0:-:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    BACK
    openbsd openbsd 6.9
    openbsd openbsd 7.0
    openbsd openssh 6.9
    openbsd openssh 7.0