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OpenAdvisories
Medium USN-4607-1 8 CVEs

openjdk-8, openjdk-lts vulnerabilities

Published Oct 27, 2020 · Updated Apr 27, 2026

Ecosystem: Ubuntu

Summary

It was discovered that OpenJDK incorrectly handled deserializing Proxy
class objects with many interfaces. A remote attacker could possibly use
this issue to cause a denial of service (memory consumption) via a
specially crafted input. (CVE-2020-14779)

Sergey Ostanin discovered that OpenJDK incorrectly restricted
authentication mechanisms. A remote attacker could possibly use this
issue to obtain sensitive information over an unencrypted connection.
(CVE-2020-14781)

It was discovered that OpenJDK incorrectly handled untrusted certificates.
An attacker could possibly use this issue to read or write sensitive
information. (CVE-2020-14782)

Zhiqiang Zang discovered that OpenJDK incorrectly checked for integer
overflows. An attacker could possibly use this issue to bypass certain
Java sandbox restrictions. (CVE-2020-14792)

Markus Loewe discovered that OpenJDK incorrectly checked permissions when
converting a file system path to an URI. An attacker could possibly use
this issue to bypass certain Java sandbox restrictions. (CVE-2020-14796)

Markus Loewe discovered that OpenJDK incorrectly checked for invalid
characters when converting an URI to a path. An attacker could possibly
use this issue to read or write sensitive information. (CVE-2020-14797)

Markus Loewe discovered that OpenJDK incorrectly checked the length of
input strings. An attacker could possibly use this issue to bypass certain
Java sandbox restrictions. (CVE-2020-14798)

It was discovered that OpenJDK incorrectly handled boundary checks. An
attacker could possibly use this issue to bypass certain Java sandbox
restrictions. (CVE-2020-14803)

Fixed packages 5

ReleasePackageFixed in
Ubuntu · 16.04 LTS 16.04:LTS openjdk-8 8u272-b10-0ubuntu1~16.04
Ubuntu · 18.04 LTS 18.04:LTS openjdk-8 8u272-b10-0ubuntu1~18.04
Ubuntu · 18.04 LTS 18.04:LTS openjdk-lts 11.0.9+11-0ubuntu1~18.04.1
Ubuntu · 20.04 LTS 20.04:LTS openjdk-8 8u272-b10-0ubuntu1~20.04
Ubuntu · 20.04 LTS 20.04:LTS openjdk-lts 11.0.9+11-0ubuntu1~20.04

Vulnerabilities 8

References

  • report
    https://ubuntu.com/security/CVE-2020-14779
  • report
    https://ubuntu.com/security/CVE-2020-14781
  • report
    https://ubuntu.com/security/CVE-2020-14782
  • report
    https://ubuntu.com/security/CVE-2020-14792
  • report
    https://ubuntu.com/security/CVE-2020-14796
  • report
    https://ubuntu.com/security/CVE-2020-14797
  • report
    https://ubuntu.com/security/CVE-2020-14798
  • report
    https://ubuntu.com/security/CVE-2020-14803