CVE-2020-27771
Publication date 4 December 2020
Last updated 24 July 2024
Ubuntu priority
Cvss 3 Severity Score
In RestoreMSCWarning() of /coders/pdf.c there are several areas where calls to GetPixelIndex() could result in values outside the range of representable for the unsigned char type. The patch casts the return value of GetPixelIndex() to ssize_t type to avoid this bug. This undefined behavior could be triggered when ImageMagick processes a crafted pdf file. Red Hat Product Security marked this as Low severity because although it could potentially lead to an impact to application availability, no specific impact was demonstrated in this case. This flaw affects ImageMagick versions prior to 7.0.9-0.
Status
Package | Ubuntu Release | Status |
---|---|---|
imagemagick | 24.04 LTS noble |
Not affected
|
22.04 LTS jammy |
Not affected
|
|
20.04 LTS focal |
Fixed 8:6.9.10.23+dfsg-2.1ubuntu11.4
|
|
18.04 LTS bionic |
Fixed 8:6.9.7.4+dfsg-16ubuntu6.11
|
|
16.04 LTS xenial |
Vulnerable
|
|
14.04 LTS trusty |
Vulnerable
|
Severity score breakdown
Parameter | Value |
---|---|
Base score | 3.3 · Low |
Attack vector | Local |
Attack complexity | Low |
Privileges required | None |
User interaction | Required |
Scope | Unchanged |
Confidentiality | None |
Integrity impact | None |
Availability impact | Low |
Vector | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L |
References
Related Ubuntu Security Notices (USN)
- USN-4988-1
- ImageMagick vulnerabilities
- 15 June 2021