CVE-2020-11612 (GCVE-0-2020-11612)

Vulnerability from cvelistv5 – Published: 2020-04-07 18:00 – Updated: 2024-08-04 11:35
VLAI
Summary
The ZlibDecoders in Netty 4.1.x before 4.1.46 allow for unbounded memory allocation while decoding a ZlibEncoded byte stream. An attacker could send a large ZlibEncoded byte stream to the Netty server, forcing the server to allocate all of its free memory to a single decoder.
Severity
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE
  • n/a
Assigner
References
URL Tags
https://lists.apache.org/thread.html/r2958e4d49ee… mailing-listx_refsource_MLIST
https://lists.apache.org/thread.html/r3195127e46c… mailing-listx_refsource_MLIST
https://lists.apache.org/thread.html/r14446ed5820… mailing-listx_refsource_MLIST
https://lists.apache.org/thread.html/ra98e3a8541a… mailing-listx_refsource_MLIST
https://lists.apache.org/thread.html/r8a654f11e11… mailing-listx_refsource_MLIST
https://lists.apache.org/thread.html/r7836bbdbe95… mailing-listx_refsource_MLIST
https://lists.apache.org/thread.html/r5b1ad615525… mailing-listx_refsource_MLIST
https://lists.apache.org/thread.html/r88e2b91560c… mailing-listx_refsource_MLIST
https://lists.apache.org/thread.html/rfd173eac20d… mailing-listx_refsource_MLIST
https://lists.apache.org/thread.html/ref2c8a0cbb3… mailing-listx_refsource_MLIST
https://lists.apache.org/thread.html/r255ed239e65… mailing-listx_refsource_MLIST
https://lists.apache.org/thread.html/rf803b65b4a5… mailing-listx_refsource_MLIST
https://lists.apache.org/thread.html/rd302ddb501f… mailing-listx_refsource_MLIST
https://lists.apache.org/thread.html/re1ea144e91f… mailing-listx_refsource_MLIST
https://lists.apache.org/thread.html/r866288c2ada… mailing-listx_refsource_MLIST
https://lists.apache.org/thread.html/rff8859c0d06… mailing-listx_refsource_MLIST
https://lists.apache.org/thread.html/r4a7e4e23bd8… mailing-listx_refsource_MLIST
https://lists.apache.org/thread.html/r9c30b7fca4b… mailing-listx_refsource_MLIST
https://lists.apache.org/thread.html/r281882fdf9e… mailing-listx_refsource_MLIST
https://lists.apache.org/thread.html/r5030cd8ea5d… mailing-listx_refsource_MLIST
https://lists.apache.org/thread.html/r3ea4918d20d… mailing-listx_refsource_MLIST
https://lists.apache.org/thread.html/ref3943adbc3… mailing-listx_refsource_MLIST
https://lists.apache.org/thread.html/r9addb580456… mailing-listx_refsource_MLIST
https://lists.apache.org/thread.html/r4f4a14d6a60… mailing-listx_refsource_MLIST
https://lists.apache.org/thread.html/r7641ee788e1… mailing-listx_refsource_MLIST
https://lists.apache.org/thread.html/rf9f8bcc4ca8… mailing-listx_refsource_MLIST
https://lists.apache.org/thread.html/r5a0b1f0b1c3… mailing-listx_refsource_MLIST
https://lists.apache.org/thread.html/r69b23a94d4a… mailing-listx_refsource_MLIST
https://lists.debian.org/debian-lts-announce/2020… mailing-listx_refsource_MLIST
https://lists.apache.org/thread.html/raaac04b7567… mailing-listx_refsource_MLIST
https://lists.apache.org/thread.html/rf5b2dfb7401… mailing-listx_refsource_MLIST
https://lists.fedoraproject.org/archives/list/pac… vendor-advisoryx_refsource_FEDORA
https://www.oracle.com/security-alerts/cpujan2021.html x_refsource_MISC
https://github.com/netty/netty/issues/6168 x_refsource_MISC
https://github.com/netty/netty/pull/9924 x_refsource_MISC
https://github.com/netty/netty/compare/netty-4.1.… x_refsource_MISC
https://lists.apache.org/thread.html/r31424427cc6… x_refsource_MISC
https://security.netapp.com/advisory/ntap-2020122… x_refsource_CONFIRM
https://lists.apache.org/thread.html/r832724df393… mailing-listx_refsource_MLIST
https://lists.apache.org/thread.html/r7790b9d9969… mailing-listx_refsource_MLIST
https://lists.apache.org/thread.html/rdb691256523… mailing-listx_refsource_MLIST
https://www.debian.org/security/2021/dsa-4885 vendor-advisoryx_refsource_DEBIAN
https://www.oracle.com/security-alerts/cpuApr2021.html x_refsource_MISC
https://www.oracle.com//security-alerts/cpujul2021.html x_refsource_MISC
https://www.oracle.com/security-alerts/cpuapr2022.html x_refsource_MISC
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Advisory\"]},{\"url\":\"https://www.oracle.com/security-alerts/cpuapr2022.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://www.oracle.com/security-alerts/cpujan2021.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\",\"Third Party Advisory\"]}]}}",
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-06-28T07:31:23+00:00",
      "cve": "CVE-2020-11612",
      "id": "CVE-2020-11612",
      "initial_release_date": "2020-01-31T00:00:00+00:00",
      "product_status:fixed": "413",
      "product_status:known_affected": "9",
      "product_status:known_not_affected": "1542",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "netty: compression/decompression codecs don\u0027t enforce limits on buffer allocation sizes",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2020/cve-2020-11612.json",
      "version": "3"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.