ALAS2-2021-1604

Amazon Linux 2 Security Advisory: ALAS-2021-1604
Advisory Release Date: 2021-02-17 18:14 Pacific
Advisory Updated Date: 2021-02-19 22:02 Pacific
Severity: Important
Issue Overview:

Info-ZIP UnZip 6.0 allows remote attackers to cause a denial of service (infinite loop) via empty bzip2 data in a ZIP archive. (CVE-2015-7697)

Buffer overflow in the zi_short function in zipinfo.c in Info-Zip UnZip 6.0 allows remote attackers to cause a denial of service (crash) via a large compression method value in the central directory file header. (CVE-2016-9844)

A heap-based buffer overflow exists in Info-Zip UnZip version <= 6.00 in the processing of password-protected archives that allows an attacker to perform a denial of service or to possibly achieve code execution. (CVE-2018-1000035)


Affected Packages:

unzip


Note:

This advisory is applicable to Amazon Linux 2 (AL2) Core repository. Visit this FAQ section for the difference between AL2 Core and AL2 Extras advisories.


Issue Correction:
Run yum update unzip to update your system.

New Packages:
aarch64:
    unzip-6.0-43.amzn2.aarch64
    unzip-debuginfo-6.0-43.amzn2.aarch64

i686:
    unzip-6.0-43.amzn2.i686
    unzip-debuginfo-6.0-43.amzn2.i686

src:
    unzip-6.0-43.amzn2.src

x86_64:
    unzip-6.0-43.amzn2.x86_64
    unzip-debuginfo-6.0-43.amzn2.x86_64

Additional References

Red Hat: CVE-2015-7697, CVE-2016-9844, CVE-2018-1000035

Mitre: CVE-2015-7697, CVE-2016-9844, CVE-2018-1000035