Vulnerability Name:

CVE-2021-45488 (CCN-216136)

Assigned:2021-11-25
Published:2021-11-25
Updated:2022-01-10
Summary:In NetBSD through 9.2, there is an information leak in the TCP ISN (ISS) generation algorithm.
CVSS v3 Severity:7.5 High (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N)
6.5 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/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): High
Integrity (I): None
Availibility (A): None
5.9 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N)
5.2 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): High
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): High
Integrity (I): None
Availibility (A): None
CVSS v2 Severity:5.0 Medium (CVSS v2 Vector: AV:N/AC:L/Au:N/C:P/I:N/A:N)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Authentication (Au): None
Impact Metrics:Confidentiality (C): Partial
Integrity (I): None
Availibility (A): None
5.4 Medium (CCN CVSS v2 Vector: AV:N/AC:H/Au:N/C:C/I:N/A:N)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): High
Athentication (Au): None
Impact Metrics:Confidentiality (C): Complete
Integrity (I): None
Availibility (A): None
Vulnerability Type:CWE-327
Vulnerability Consequences:Obtain Information
References:Source: MITRE
Type: CNA
CVE-2021-45488

Source: CCN
Type: NetBSD Security Advisory 2021-001
Predictable ID disclosures in IPv4 and IPv6

Source: MISC
Type: Patch, Vendor Advisory
http://ftp.netbsd.org/pub/NetBSD/security/advisories/NetBSD-SA2021-001.txt.asc

Source: MISC
Type: Technical Description, Third Party Advisory
https://arxiv.org/pdf/2112.09604.pdf

Source: XF
Type: UNKNOWN
netbsd-cve202145488-info-disc(216136)

Source: CCN
Type: WhiteSource Vulnerability Database
CVE-2021-45488

Vulnerable Configuration:Configuration 1:
  • cpe:/o:netbsd:netbsd:*:*:*:*:*:*:*:* (Version <= 9.2)

    • * Denotes that component is vulnerable
    BACK
    netbsd netbsd *