CVE-2020-27844: Heap buffer overflow in OpenJPEG

Reference Links

• https://bugzilla.redhat.com/show_bug.cgi?id=1907521
• https://lists.debian.org/debian-lts-announce/2021/02/msg00011.html
• https://security.gentoo.org/glsa/202101-29
• https://www.oracle.com//security-alerts/cpujul2021.html
• https://www.oracle.com/security-alerts/cpuApr2021.html
• https://github.com/uclouvain/openjpeg/issues/1299
• https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1907698
• https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1907697
• https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1907695
• https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1907696
• https://github.com/uclouvain/openjpeg/commit/73fdf28342e4594019af26eb6a347a34eceb6296
• https://access.redhat.com/security/cve/cve-2020-27844
• https://github.com/uclouvain/openjpeg/commit/4edb8c83374f52cd6a8f2c7c875e8ffacccb5fa5
• https://chromereleases.googleblog.com/2021/03/stable-channel-update-for-desktop.html (Advisory)

Parent vulnerabilities

(Appears in the following advisories)

• 3803715665928870837

Peer vulnerabilities

(Found alongside the following vulnerabilities)

• CVE-2021-21159
• CVE-2021-21160
• CVE-2021-21161
• CVE-2021-21162
• CVE-2021-21163
• CVE-2021-21164
• CVE-2021-21165
• CVE-2021-21166
• CVE-2021-21167
• CVE-2021-21168
• CVE-2021-21169
• CVE-2021-21170
• CVE-2021-21171
• CVE-2021-21172
• CVE-2021-21173
• CVE-2021-21174
• CVE-2021-21175
• CVE-2021-21176
• CVE-2021-21177
• CVE-2021-21178
• CVE-2021-21179
• CVE-2021-21180
• CVE-2021-21181
• CVE-2021-21182
• CVE-2021-21183
• CVE-2021-21184
• CVE-2021-21185
• CVE-2021-21186
• CVE-2021-21187
• CVE-2021-21188
• CVE-2021-21189
• CVE-2021-21190
• CVE-2021-21200

Frequently Asked Questions

• What is CVE-2020-27844?

  CVE-2020-27844 is a vulnerability found in openjpeg's src/lib/openjp2/t2.c in versions prior to 2.4.0.

• How does CVE-2020-27844 impact confidentiality?

  CVE-2020-27844 can impact confidentiality as it allows an attacker to cause an out-of-bounds write, potentially leading to unauthorized access to sensitive information.

• Is CVE-2020-27844 a high severity vulnerability?

  Yes, CVE-2020-27844 has a severity rating of 7.8, which is considered high.

• How can I fix CVE-2020-27844?

  To fix CVE-2020-27844, update to version 2.4.0 or later of openjpeg.

• Where can I find more information about CVE-2020-27844?

  More information about CVE-2020-27844 can be found in the references: [GitHub Issue](https://github.com/uclouvain/openjpeg/issues/1299), [Red Hat Bugzilla](https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1907698), [Red Hat Bugzilla](https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1907697).