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CVE-2021-3697

A crafted JPEG image may lead the JPEG reader to underflow its data pointer, allowing user-controlled data to be written in heap. To a successful to be performed the attacker needs to perform some triage over the heap layout and craft an image with a malicious format and payload. This vulnerability can lead to data corruption and eventual code execution or secure boot circumvention. This flaw affects grub2 versions prior grub-2.12.

Data is provided by the National Vulnerability Database (NVD)
Gnu ≫ Grub2 Version >= 2.00 < 2.12
Redhat ≫ Developer Tools Version1.0
Redhat ≫ Openshift Version3.0
Redhat ≫ Enterprise Linux Version8.0
Redhat ≫ Enterprise Linux Version8.1
Redhat ≫ Enterprise Linux Version8.4
Redhat ≫ Enterprise Linux Version9.0
Redhat ≫ Enterprise Linux Eus Version8.2
Redhat ≫ Enterprise Linux Eus Version8.4
Redhat ≫ Enterprise Linux Eus Version8.6
Redhat ≫ Enterprise Linux Eus Version9.0
Redhat ≫ Openshift Container Platform Version4.6
   Redhat ≫ Enterprise Linux Version8.0
Redhat ≫ Openshift Container Platform Version4.9
   Redhat ≫ Enterprise Linux Version8.0
Redhat ≫ Openshift Container Platform Version4.10
   Redhat ≫ Enterprise Linux Version8.0
Redhat ≫ Codeready Linux Builder Version-
   Redhat ≫ Enterprise Linux Version8.0
   Redhat ≫ Enterprise Linux Version9.0
   Redhat ≫ Enterprise Linux Eus Version8.2
   Redhat ≫ Enterprise Linux Eus Version8.4
   Redhat ≫ Enterprise Linux Eus Version8.6
   Redhat ≫ Enterprise Linux Eus Version9.0
Zu dieser CVE wurde keine CISA KEV oder CERT.AT-Warnung gefunden.
EPSS Metriken
Type Source Score Percentile
EPSS FIRST.org 0.07% 0.21
CVSS Metriken
Source Base Score Exploit Score Impact Score Vector string
nvd@nist.gov 7 1 5.9
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
nvd@nist.gov 4.4 3.4 6.4
AV:L/AC:M/Au:N/C:P/I:P/A:P
CWE-787 Out-of-bounds Write

The product writes data past the end, or before the beginning, of the intended buffer.

https://bugzilla.redhat.com/show_bug.cgi?id=1991687
Third Party Advisory
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