GHSA-wc69-rhjr-hc9g

    Dashboard / Vulnerabilities / GHSA-wc69-rhjr-hc9g

    GHSA-wc69-rhjr-hc9g

    Published: 6 Jul 2022Last Modified: 10 Sept 2026

    Summary: Moment.js vulnerable to Inefficient Regular Expression Complexity

    Details: ### Impact * using string-to-date parsing in moment (more specifically rfc2822 parsing, which is tried by default) has quadratic (N^2) complexity on specific inputs * noticeable slowdown is observed with inputs above 10k characters * users who pass user-provided strings without sanity length checks to moment constructor are vulnerable to (Re)DoS attacks ### Patches The problem is patched in 2.29.4, the patch can be applied to all affected versions with minimal tweaking. ### Workarounds In general, given the proliferation of ReDoS attacks, it makes sense to limit the length of the user input to something sane, like 200 characters or less. I haven't seen legitimate cases of date-time strings longer than that, so all moment users who do pass a user-originating string to constructor are encouraged to apply such a rudimentary filter, that would help with this but also most future ReDoS vulnerabilities. ### References There is an excellent writeup of the issue here: https://github.com/moment/moment/pull/6015#issuecomment-1152961973= ### Details The issue is rooted in the code that removes legacy comments (stuff inside parenthesis) from strings during rfc2822 parsing. `moment("(".repeat(500000))` will take a few minutes to process, which is unacceptable.

    References: https://github.com/moment/moment/security/advisories/GHSA-wc69-rhjr-hc9g, https://nvd.nist.gov/vuln/detail/CVE-2022-31129, https://github.com/moment/moment/pull/6015#issuecomment-1152961973, https://github.com/moment/moment/pull/6015/commits/4bbb9f3ccbe231de40207503f344fe5ce97584f4, https://github.com/moment/moment/pull/6015/commits/bfd4f2375d5c1a2106246721d693a9611dddfbfe, https://github.com/moment/moment/pull/6015/commits/dc0d180e90d8a84f7ff13572363330a22b3ea504, https://github.com/moment/moment/commit/9a3b5894f3d5d602948ac8a02e4ee528a49ca3a3, https://security.netapp.com/advisory/ntap-20241108-0002, https://security.netapp.com/advisory/ntap-20221014-0003, https://lists.fedoraproject.org/archives/list/[email protected]/message/ZMX5YHELQVCGKKQVFXIYOTBMN23YYSRO, https://lists.fedoraproject.org/archives/list/[email protected]/message/ORJX2LF6KMPIHP6B2P6KZIVKMLE3LVJ5, https://lists.fedoraproject.org/archives/list/[email protected]/message/IWY24RJA3SBJGA5N4CU4VBPHJPPPJL5O, https://lists.fedoraproject.org/archives/list/[email protected]/message/6QIO6YNLTK2T7SPKDS4JEL45FANLNC2Q, https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZMX5YHELQVCGKKQVFXIYOTBMN23YYSRO, https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ORJX2LF6KMPIHP6B2P6KZIVKMLE3LVJ5, https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IWY24RJA3SBJGA5N4CU4VBPHJPPPJL5O, https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6QIO6YNLTK2T7SPKDS4JEL45FANLNC2Q, https://lists.debian.org/debian-lts-announce/2023/01/msg00035.html, https://huntr.dev/bounties/f0952b67-f2ff-44a9-a9cd-99e0a87cb633, https://github.com/moment/moment

    Affected packages

    Package

    Name: moment

    Purl: pkg:npm/moment

    Affected ranges

    Type: SEMVER

    Events:

    Introduced- 2.18.0
    Fixed -2.29.4

    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
    GHSA-wc69-rhjr-hc9g | CVE-DB