Vulnerability Name:

CVE-2021-29922 (CCN-207023)

Assigned:2021-03-29
Published:2021-03-29
Updated:2022-11-07
Summary:library/std/src/net/parser.rs in Rust before 1.53.0 does not properly consider extraneous zero characters at the beginning of an IP address string, which (in some situations) allows attackers to bypass access control that is based on IP addresses, because of unexpected octal interpretation.
CVSS v3 Severity:9.1 Critical (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H)
8.2 High (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H/E:P/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): 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)
6.7 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:P/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
7.3 High (REDHAT CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L)
6.6 Medium (REDHAT Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/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): Low
Integrity (I): Low
Availibility (A): Low
CVSS v2 Severity:6.4 Medium (CVSS v2 Vector: AV:N/AC:L/Au:N/C:N/I:P/A:P)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Authentication (Au): None
Impact Metrics:Confidentiality (C): None
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-noinfo
CWE-20
Vulnerability Consequences:Bypass Security
References:Source: MITRE
Type: CNA
CVE-2021-29922

Source: MISC
Type: Third Party Advisory
https://defcon.org/html/defcon-29/dc-29-speakers.html#kaoudis

Source: MISC
Type: Vendor Advisory
https://doc.rust-lang.org/beta/std/net/struct.Ipv4Addr.html

Source: XF
Type: UNKNOWN
rust-cve202129922-sec-bypass(207023)

Source: MISC
Type: Exploit, Issue Tracking, Patch, Third Party Advisory
https://github.com/rust-lang/rust/issues/83648

Source: MISC
Type: Patch, Third Party Advisory
https://github.com/rust-lang/rust/pull/83652

Source: CCN
Type: SICK-2021-015
CVE-2021-29922 rust standard library net - Improper Input Validation of octal literals in rust 1.52.0 std::net and below results in indeterminate SSRF & RFI vulnerabilities

Source: MISC
Type: Exploit, Third Party Advisory
https://github.com/sickcodes/security/blob/master/advisories/SICK-2021-015.md

Source: GENTOO
Type: Third Party Advisory
GLSA-202210-09

Source: CCN
Type: Rust Web site
Rust

Vulnerable Configuration:Configuration 1:
  • cpe:/a:rust-lang:rust:*:*:*:*:*:*:*:* (Version < 1.53.0)

    • Configuration RedHat 1:
  • cpe:/a:redhat:enterprise_linux:8:*:*:*:*:*:*:*

    • Configuration RedHat 2:
  • cpe:/a:redhat:enterprise_linux:8::appstream:*:*:*:*:*

    • Configuration CCN 1:
  • cpe:/a:rust-lang:rust:1.52.0:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    Oval Definitions
    Definition IDClassTitleLast Modified
    oval:com.redhat.rhsa:def:20214270
    P
    		RHSA-2021:4270: rust-toolset:rhel8 security, bug fix, and enhancement update (Moderate)
    2021-11-09
    BACK
    rust-lang rust *
    rust-lang rust 1.52.0