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x/vulndb: potential Go vuln in github.com/nghttp2/nghttp2: CVE-2020-11080 #2268

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tatianab opened this issue Nov 8, 2023 · 1 comment
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x/vulndb: potential Go vuln in github.com/nghttp2/nghttp2: CVE-2020-11080 #2268

tatianab opened this issue Nov 8, 2023 · 1 comment
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excluded: LEGACY_FALSE_POSITIVE (DO NOT USE) Vulnerability marked as false positive before we introduced the triage process

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@tatianab
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tatianab commented Nov 8, 2023

CVE-2020-11080 references github.com/nghttp2/nghttp2, which may be a Go module.

Description:
In nghttp2 before version 1.41.0, the overly large HTTP/2 SETTINGS frame payload causes denial of service. The proof of concept attack involves a malicious client constructing a SETTINGS frame with a length of 14,400 bytes (2400 individual settings entries) over and over again. The attack causes the CPU to spike at 100%. nghttp2 v1.41.0 fixes this vulnerability. There is a workaround to this vulnerability. Implement nghttp2_on_frame_recv_callback callback, and if received frame is SETTINGS frame and the number of settings entries are large (e.g., > 32), then drop the connection.

References:

Cross references:

See doc/triage.md for instructions on how to triage this report.

modules:
    - module: github.com/nghttp2/nghttp2
      vulnerable_at: 1.58.0
      packages:
        - package: nghttp2
cves:
    - CVE-2020-11080
references:
    - web: https://www.debian.org/security/2020/dsa-4696
    - web: http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00024.html
    - web: https://lists.fedoraproject.org/archives/list/[email protected]/message/AAC2AA36OTRHKSVM5OV7TTVB3CZIGEFL/
    - web: https://www.oracle.com/security-alerts/cpujul2020.html
    - advisory: https://github.com/nghttp2/nghttp2/security/advisories/GHSA-q5wr-xfw9-q7xr
    - fix: https://github.com/nghttp2/nghttp2/commit/336a98feb0d56b9ac54e12736b18785c27f75090
    - fix: https://github.com/nghttp2/nghttp2/commit/f8da73bd042f810f34d19f9eae02b46d870af394
    - web: https://www.oracle.com/security-alerts/cpuoct2020.html
    - web: https://lists.fedoraproject.org/archives/list/[email protected]/message/4OOYAMJVLLCLXDTHW3V5UXNULZBBK4O6/
    - web: https://www.oracle.com/security-alerts/cpujan2021.html
    - web: https://www.oracle.com//security-alerts/cpujul2021.html
    - web: https://lists.debian.org/debian-lts-announce/2021/10/msg00011.html
    - web: https://www.oracle.com/security-alerts/cpuapr2022.html
    - web: https://lists.debian.org/debian-lts-announce/2023/10/msg00023.html
@tatianab tatianab added the excluded: LEGACY_FALSE_POSITIVE (DO NOT USE) Vulnerability marked as false positive before we introduced the triage process label Nov 8, 2023
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Change https://go.dev/cl/540721 mentions this issue: data/excluded: batch add 135 excluded reports

@GoVulnBot GoVulnBot mentioned this issue Apr 10, 2024
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