Vulnerability Description
A memory corruption issue was found in Artifex Ghostscript 9.50 and 9.52. Use of a non-standard PostScript operator can allow overriding of file access controls. The 'rsearch' calculation for the 'post' size resulted in a size that was too large, and could underflow to max uint32_t. This was fixed in commit 5d499272b95a6b890a1397e11d20937de000d31b.
CVSS Score
CRITICAL
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Artifex | Ghostscript | 9.50 |
| Canonical | Ubuntu Linux | 20.04 |
| Opensuse | Leap | 15.1 |
Related Weaknesses (CWE)
References
- http://git.ghostscript.com/?p=ghostpdl.git%3Ba=log
- http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00004.htmlMailing ListThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00006.htmlMailing ListThird Party Advisory
- https://artifex.com/security-advisories/CVE-2020-15900Vendor Advisory
- https://git.ghostscript.com/?p=ghostpdl.git%3Ba=commitdiff%3Bh=5d499272b95a6b890
- https://github.com/ArtifexSoftware/ghostpdl/commit/5d499272b95a6b890a1397e11d209PatchThird Party Advisory
- https://github.com/ArtifexSoftware/ghostpdl/commits/master/psi/zstring.cPatchThird Party Advisory
- https://security.gentoo.org/glsa/202008-20Third Party Advisory
- https://usn.ubuntu.com/4445-1/Third Party Advisory
- http://git.ghostscript.com/?p=ghostpdl.git%3Ba=log
- http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00004.htmlMailing ListThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00006.htmlMailing ListThird Party Advisory
- https://artifex.com/security-advisories/CVE-2020-15900Vendor Advisory
- https://git.ghostscript.com/?p=ghostpdl.git%3Ba=commitdiff%3Bh=5d499272b95a6b890
- https://github.com/ArtifexSoftware/ghostpdl/commit/5d499272b95a6b890a1397e11d209PatchThird Party Advisory
FAQ
What is CVE-2020-15900?
CVE-2020-15900 is a vulnerability with a CVSS score of 9.8 (CRITICAL). A memory corruption issue was found in Artifex Ghostscript 9.50 and 9.52. Use of a non-standard PostScript operator can allow overriding of file access controls. The 'rsearch' calculation for the 'pos...
How severe is CVE-2020-15900?
CVE-2020-15900 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.
Is there a patch for CVE-2020-15900?
Check the references section above for vendor advisories and patch information. Affected products include: Artifex Ghostscript, Canonical Ubuntu Linux, Opensuse Leap.