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Package "lib32z1"

Name: lib32z1

Description:

compression library - 32 bit runtime
Latest version: 1:1.2.11.dfsg-2ubuntu1.5
Release: focal (20.04)
Level: security
Repository: main
Head package: zlib
Homepage: http://zlib.net/

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Other versions of "lib32z1" in Focal

Repository Area Version
base main 1:1.2.11.dfsg-2ubuntu1
updates main 1:1.2.11.dfsg-2ubuntu1.5

Changelog

Version: 1:1.2.11.dfsg-2ubuntu1.5 2022-10-17 20:07:18 UTC

  zlib (1:1.2.11.dfsg-2ubuntu1.5) focal-security; urgency=medium

  * SECURITY UPDATE: heap-based buffer over-read (LP: #1988548)
    - debian/patches/CVE-2022-37434-1.patch: in inflate.c, add an extra
      condition to check if state->head->extra_max is greater than len
      before copying, and move the len assignment to be placed before the
      check.
    - debian/patches/CVE-2022-37434-2.patch: in the previous patch, in
      inflate.c, the place of the len assignment was causing issues so it
      was moved to be placed within the check.
    - CVE-2022-37434

 -- Rodrigo Figueiredo Zaiden <email address hidden> Fri, 14 Oct 2022 17:22:43 -0300
Source diff to previous version
1988548 Missing fix for CVE-2022-37434 in zlib1g in focal and jammy
CVE-2022-37434 zlib through 1.2.12 has a heap-based buffer over-read or buffer overflow in inflate in inflate.c via a large gzip header extra field. NOTE: only appl

Version: 1:1.2.11.dfsg-2ubuntu1.3 2022-03-30 16:06:21 UTC

  zlib (1:1.2.11.dfsg-2ubuntu1.3) focal-security; urgency=medium

  * SECURITY UPDATE: memory corruption when deflating
    - debian/patches/CVE-2018-25032-1.patch: fix a bug that can crash
      deflate on some input when using Z_FIXED in deflate.c, deflate.h.
    - debian/patches/CVE-2018-25032-2.patch: assure that the number of bits
      for deflatePrime() is valid in deflate.c.
    - CVE-2018-25032

 -- Marc Deslauriers <email address hidden> Sat, 26 Mar 2022 14:20:54 -0400
CVE-2018-25032 zlib 1.2.11 allows memory corruption when deflating (i.e., when compressing) if the input has many distant matches.


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