RUSTSEC-2019-0033

    Dashboard / Vulnerabilities / RUSTSEC-2019-0033

    RUSTSEC-2019-0033

    Published: 16 Nov 2019Last Modified: 8 Nov 2023

    Summary: Integer Overflow in HeaderMap::reserve() can cause Denial of Service

    Details: `HeaderMap::reserve()` used `usize::next_power_of_two()` to calculate the increased capacity. However, `next_power_of_two()` silently overflows to 0 if given a sufficiently large number in release mode. If the map was not empty when the overflow happens, the library will invoke `self.grow(0)` and start infinite probing. This allows an attacker who controls the argument to `reserve()` to cause a potential denial of service (DoS). The flaw was corrected in 0.1.20 release of `http` crate.

    References: https://crates.io/crates/http, https://rustsec.org/advisories/RUSTSEC-2019-0033.html, https://github.com/hyperium/http/issues/352

    Affected packages

    Package

    Name: http

    Purl: pkg:cargo/http

    Affected ranges

    Type: SEMVER

    Events:

    Introduced- 0.0.0-0
    Fixed -0.1.20

    Affected versions

    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
    RUSTSEC-2019-0033 | CVE-DB