Updated ghostscript packages are available for both Debian GNU/Linux 9 and 10 to address the -dSAFER escape in .charkeys security issue

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Debian Security Advisory DSA-4569-1 security@debian.org
https://www.debian.org/security/ Salvatore Bonaccorso
November 14, 2019 https://www.debian.org/security/faq
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Package : ghostscript
CVE ID : CVE-2019-14869

Manfred Paul and Lukas Schauer reported that the .charkeys procedure in
Ghostscript, the GPL PostScript/PDF interpreter, does not properly
restrict privileged calls, which could result in bypass of file system
restrictions of the dSAFER sandbox.

For the oldstable distribution (stretch), this problem has been fixed
in version 9.26a~dfsg-0+deb9u6.

For the stable distribution (buster), this problem has been fixed in
version 9.27~dfsg-2+deb10u3.

We recommend that you upgrade your ghostscript packages.

For the detailed security status of ghostscript please refer to its
security tracker page at:
https://security-tracker.debian.org/tracker/ghostscript

Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://www.debian.org/security/