SB2019040482 - Input validation error in imagemagick6 (Alpine package)
Published: April 4, 2019
Security Bulletin ID
SB2019040482
Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Input validation error (CVE-ID: CVE-2018-16643)
The vulnerability allows a remote non-authenticated attacker to perform a denial of service (DoS) attack.
The functions ReadDCMImage in coders/dcm.c, ReadPWPImage in coders/pwp.c, ReadCALSImage in coders/cals.c, and ReadPICTImage in coders/pict.c in ImageMagick 7.0.8-4 do not check the return value of the fputc function, which allows remote attackers to cause a denial of service via a crafted image file.
Remediation
Install update from vendor's website.
References
- https://git.alpinelinux.org/aports/commit/?id=7265f5c68465fbf270b08e5b5afab0c89bebdcff
- https://git.alpinelinux.org/aports/commit/?id=9aa6f1864ecdab720ef92348b15660fd036b12b0
- https://git.alpinelinux.org/aports/commit/?id=49f02237bafd3d3005a5791741d775c1380eddf4
- https://git.alpinelinux.org/aports/commit/?id=d4d73543a48ca18ae905200443cacdf97da41f6e