ALAS2-2022-1893

Amazon Linux 2 Security Advisory: ALAS-2022-1893
Advisory Release Date: 2022-12-01 20:31 Pacific
Advisory Updated Date: 2022-12-06 22:40 Pacific
Severity: Medium
Issue Overview:

The ncurses package (tic) is susceptible to a heap overflow on crafted input. When the terminfo entry-description compiler processes input, proper bounds checking was not enforced leading to this software flaw. The highest threat from this vulnerability is system availability. (CVE-2021-39537)

A segmentation fault vulnerability was found in ncurses's convert_strings() function of tinfo/read_entry.c file. This flaw occurs due to corrupted terminfo data, triggering an out-of-bounds read error. (CVE-2022-29458)


Affected Packages:

ncurses


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 ncurses to update your system.

New Packages:
aarch64:
    ncurses-6.0-8.20170212.amzn2.1.4.aarch64
    ncurses-libs-6.0-8.20170212.amzn2.1.4.aarch64
    ncurses-compat-libs-6.0-8.20170212.amzn2.1.4.aarch64
    ncurses-c++-libs-6.0-8.20170212.amzn2.1.4.aarch64
    ncurses-devel-6.0-8.20170212.amzn2.1.4.aarch64
    ncurses-static-6.0-8.20170212.amzn2.1.4.aarch64
    ncurses-debuginfo-6.0-8.20170212.amzn2.1.4.aarch64

i686:
    ncurses-6.0-8.20170212.amzn2.1.4.i686
    ncurses-libs-6.0-8.20170212.amzn2.1.4.i686
    ncurses-compat-libs-6.0-8.20170212.amzn2.1.4.i686
    ncurses-c++-libs-6.0-8.20170212.amzn2.1.4.i686
    ncurses-devel-6.0-8.20170212.amzn2.1.4.i686
    ncurses-static-6.0-8.20170212.amzn2.1.4.i686
    ncurses-debuginfo-6.0-8.20170212.amzn2.1.4.i686

noarch:
    ncurses-base-6.0-8.20170212.amzn2.1.4.noarch
    ncurses-term-6.0-8.20170212.amzn2.1.4.noarch

src:
    ncurses-6.0-8.20170212.amzn2.1.4.src

x86_64:
    ncurses-6.0-8.20170212.amzn2.1.4.x86_64
    ncurses-libs-6.0-8.20170212.amzn2.1.4.x86_64
    ncurses-compat-libs-6.0-8.20170212.amzn2.1.4.x86_64
    ncurses-c++-libs-6.0-8.20170212.amzn2.1.4.x86_64
    ncurses-devel-6.0-8.20170212.amzn2.1.4.x86_64
    ncurses-static-6.0-8.20170212.amzn2.1.4.x86_64
    ncurses-debuginfo-6.0-8.20170212.amzn2.1.4.x86_64

Additional References

Red Hat: CVE-2021-39537, CVE-2022-29458

Mitre: CVE-2021-39537, CVE-2022-29458