opensuse-su-2025:14766-1
Vulnerability from csaf_opensuse
Published
2025-02-11 00:00
Modified
2025-02-11 00:00
Summary
libngtcp2-16-1.10.0-1.1 on GA media

Notes

Title of the patch
libngtcp2-16-1.10.0-1.1 on GA media
Description of the patch
These are all security issues fixed in the libngtcp2-16-1.10.0-1.1 package on the GA media of openSUSE Tumbleweed.
Patchnames
openSUSE-Tumbleweed-2025-14766
Terms of use
CSAF 2.0 data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0).


To clipboard 

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  "vulnerabilities": [
    {
      "cve": "CVE-2024-52811",
      "ids": [
        {
          "system_name": "SUSE CVE Page",
          "text": "https://www.suse.com/security/cve/CVE-2024-52811"
        }
      ],
      "notes": [
        {
          "category": "general",
          "text": "The ngtcp2 project is an effort to implement IETF QUIC protocol in C. In affected versions acks are not validated before being written to the qlog leading to a buffer overflow. In `ngtcp2_conn::conn_recv_pkt` for an ACK, there was new logic that got added to skip `conn_recv_ack` if an ack has already been processed in the payload. However, this causes us to also skip `ngtcp2_pkt_validate_ack`. The ack which was skipped still got written to qlog. The bug occurs in `ngtcp2_qlog::write_ack_frame`. It is now possible to reach this code with an invalid ack, suppose `largest_ack=0` and `first_ack_range=15`. Subtracting `largest_ack - first_ack_range` will lead to an integer underflow which is 20 chars long. However, the ngtcp2 qlog code assumes the number written is a signed integer and only accounts for 19 characters of overhead (see `NGTCP2_QLOG_ACK_FRAME_RANGE_OVERHEAD`). Therefore, we overwrite the buffer causing a heap overflow. This is high priority and could potentially impact many users if they enable qlog. qlog is disabled by default. Due to its overhead, it is most likely used for debugging purpose, but the actual use is unknown. ngtcp2 v1.9.1 fixes the bug and users are advised to upgrade. Users unable to upgrade should not turn on qlog.",
          "title": "CVE description"
        }
      ],
      "product_status": {
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      "references": [
        {
          "category": "external",
          "summary": "CVE-2024-52811",
          "url": "https://www.suse.com/security/cve/CVE-2024-52811"
        },
        {
          "category": "external",
          "summary": "SUSE Bug 1233780 for CVE-2024-52811",
          "url": "https://bugzilla.suse.com/1233780"
        }
      ],
      "remediations": [
        {
          "category": "vendor_fix",
          "details": "To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or \"zypper patch\".\n",
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      ],
      "threats": [
        {
          "category": "impact",
          "date": "2025-02-11T00:00:00Z",
          "details": "important"
        }
      ],
      "title": "CVE-2024-52811"
    }
  ]
}


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