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    CVE-2020-15900

    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.

    Published:Jul 27, 2020
    Last Modified:Nov 21, 2024
    EPS:Jul 28, 2020
    EPSS Score:0.11696
    CVSS Score:9.8

    Affected Products

    Vendor
    Artifex
    Product
    Ghostscript
    Vendor
    Canonical
    Product
    Ubuntu Linux
    Vendor
    Opensuse
    Product
    Leap

    Exploits

    No exploit reference

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-100 Overflow Buffers
    CAPEC-47 Buffer Overflow via Parameter Expansion

    Related CVEs

    CVE-2025-59800 (CVSS 4.3) — In Artifex Ghostscript through 10.05.1, ocr_begin_page in devices/gdevpdfocr.c has an integer overflow that le…
    CVE-2025-59799 (CVSS 4.3) — Artifex Ghostscript through 10.05.1 has a stack-based buffer overflow in pdfmark_coerce_dest in devices/vector…
    CVE-2025-59798 (CVSS 4.3) — Artifex Ghostscript through 10.05.1 has a stack-based buffer overflow in pdf_write_cmap in devices/vector/gdev…
    CVE-2025-48708 (CVSS 4) — gs_lib_ctx_stash_sanitized_arg in base/gslibctx.c in Artifex Ghostscript before 10.05.1 lacks argument sanitiz…
    CVE-2025-46646 (CVSS 4.5) — In Artifex Ghostscript before 10.05.0, decode_utf8 in base/gp_utf8.c mishandles overlong UTF-8 encoding. NOTE:…
    CVE-2025-27832 (CVSS 9.8) — An issue was discovered in Artifex Ghostscript before 10.05.0. The NPDL device has a Compression buffer overfl…
    CVE-2025-27834 (CVSS 7.8) — An issue was discovered in Artifex Ghostscript before 10.05.0. A buffer overflow occurs via an oversized Type …
    CVE-2025-27836 (CVSS 9.8) — An issue was discovered in Artifex Ghostscript before 10.05.0. The BJ10V device has a Print buffer overflow in…
    CVE-2025-27830 (CVSS 7.8) — An issue was discovered in Artifex Ghostscript before 10.05.0. A buffer overflow occurs during serialization o…
    CVE-2025-27833 (CVSS 7.8) — An issue was discovered in Artifex Ghostscript before 10.05.0. A buffer overflow occurs for a long TTF font na…

    References

    http://git.ghostscript.com/?p=ghostpdl.git%3Ba=log
    http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00004.html
    http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00006.html
    https://artifex.com/security-advisories/CVE-2020-15900
    https://git.ghostscript.com/?p=ghostpdl.git%3Ba=commitdiff%3Bh=5d499272b95a6b890a1397e11d20937de000d31b
    https://github.com/ArtifexSoftware/ghostpdl/commit/5d499272b95a6b890a1397e11d20937de000d31b
    https://github.com/ArtifexSoftware/ghostpdl/commits/master/psi/zstring.c
    https://security.gentoo.org/glsa/202008-20
    https://usn.ubuntu.com/4445-1/
    http://git.ghostscript.com/?p=ghostpdl.git%3Ba=log
    http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00004.html
    http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00006.html
    https://artifex.com/security-advisories/CVE-2020-15900
    https://git.ghostscript.com/?p=ghostpdl.git%3Ba=commitdiff%3Bh=5d499272b95a6b890a1397e11d20937de000d31b
    https://github.com/ArtifexSoftware/ghostpdl/commit/5d499272b95a6b890a1397e11d20937de000d31b
    https://github.com/ArtifexSoftware/ghostpdl/commits/master/psi/zstring.c
    https://security.gentoo.org/glsa/202008-20
    https://usn.ubuntu.com/4445-1/

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High