CVE Vulnerability

CVE-2021-29923

Go before 1.17 does not properly consider extraneous zero characters at the beginning of an IP address octet, which (in some situations) allows attackers to bypass access control that is based on IP addresses, because of unexpected octal interpretation. This affects net.ParseIP and net.ParseCIDR.

5 /10

CVSS v2.0 :

V3 Legend

Vector :

Exploitability : 10 / Impact : 2.9

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Confidentiality Impact NONE

Integrity Impact PARTIAL

Availability Impact NONE

Scope

7.5 /10

CVSS v3.0 : HIGH

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact HIGH

Availability Impact NONE

Scope UNCHANGED

References
Link Resource
https://github.com/golang/go/issues/43389 Issue Tracking Third Party Advisory
https://github.com/golang/go/issues/30999 Exploit Issue Tracking
https://defcon.org/html/defcon-29/dc-29-speakers.html#kaoudis Third Party Advisory
https://github.com/sickcodes/security/blob/master/advisories/SICK-2021-016.md Exploit Third Party Advisory
https://golang.org/pkg/net/#ParseCIDR Vendor Advisory
https://go-review.googlesource.com/c/go/+/325829/ Patch Third Party Advisory
https://www.oracle.com/security-alerts/cpujan2022.html Patch Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/4CHKSFMHZVOBCZSSVRE3UEYNKARTBMTM/ Mailing List Third Party Advisory
https://security.gentoo.org/glsa/202208-02 Third Party Advisory
Configurations

Configuration 1

cpe:2.3:a:golang:go:*:*:*:*:*:*:*:*
cpe:2.3:a:oracle:timesten_in-memory_database:*:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:36:*:*:*:*:*:*:*
Information

Published : 2021-08-07 05:15

Updated : 2022-09-14 09:11

NVD link : CVE-2021-29923

Mitre link : CVE-2021-29923

Products Affected
No products.
CWE
CWE-1389

Incorrect Parsing of Numbers with Different Radices