Summary
It was discovered that zlib, vendored in klibc, incorrectly handled pointer
arithmetic. An attacker could use this issue to cause klibc to crash or to
possibly execute arbitrary code. (CVE-2016-9840, CVE-2016-9841)
Danilo Ramos discovered that zlib, vendored in klibc, incorrectly handled
memory when performing certain deflating operations. An attacker could use
this issue to cause klibc to crash or to possibly execute arbitrary code.
(CVE-2018-25032)
Evgeny Legerov discovered that zlib, vendored in klibc, incorrectly handled
memory when performing certain inflate operations. An attacker could use
this issue to cause klibc to crash or to possibly execute arbitrary code.
(CVE-2022-37434)
Fixed packages 5
| Release | Package | Fixed in |
|---|---|---|
| Ubuntu · 20.04 LTS 20.04:LTS | klibc | 2.0.7-1ubuntu5.2 |
| Ubuntu · 22.04 LTS 22.04:LTS | klibc | 2.0.10-4ubuntu0.1 |
| Ubuntu · Pro 14.04 LTS Pro:14.04:LTS | klibc | 2.0.3-0ubuntu1.14.04.3+esm3 |
| Ubuntu · Pro 16.04 LTS Pro:16.04:LTS | klibc | 2.0.4-8ubuntu1.16.04.4+esm2 |
| Ubuntu · Pro 18.04 LTS Pro:18.04:LTS | klibc | 2.0.4-9ubuntu2.2+esm1 |
Vulnerabilities 4
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Critical 9.8
zlib through 1.2.12 has a heap-based buffer over-read or buffer overflow in inflate in inflate.c via a large gzip heade…
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High 7.5
Nokogiri affected by zlib's Out-of-bounds Write vulnerability
zlib before 1.2.12 allows memory corruption when deflating (i.e., when compressing) if the input has many distant matches.
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Unscored —
inftrees.c in zlib 1.2.8 might allow context-dependent attackers to have unspecified impact by leveraging improper poin…
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Unscored —
inffast.c in zlib 1.2.8 might allow context-dependent attackers to have unspecified impact by leveraging improper point…