CVE-2021-29922

    Dashboard / Vulnerabilities / CVE-2021-29922

    CVE-2021-29922

    Published: 7 Aug 2021Last Modified: 9 Jul 2026

    Summary:

    Details: 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.

    References: https://defcon.org/html/defcon-29/dc-29-speakers.html#kaoudis, https://doc.rust-lang.org/beta/std/net/struct.Ipv4Addr.html, https://security.gentoo.org/glsa/202210-09, https://github.com/rust-lang/rust/issues/83648, https://github.com/rust-lang/rust/pull/83652, https://github.com/sickcodes/security/blob/master/advisories/SICK-2021-015.md

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -53cb7b09b00cbea8754ffb78e7e3cb521cb8af4b

    Affected versions

    1.0.0-beta
    1.0.0-alpha.2
    1.0.0-alpha

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High
    CVE-2021-29922 | CVE-DB