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4.3
CVSSv2

CVE-2021-36978

Published: 20/07/2021 Updated: 15/01/2024
CVSS v2 Base Score: 4.3 | Impact Score: 2.9 | Exploitability Score: 8.6
CVSS v3 Base Score: 5.5 | Impact Score: 3.6 | Exploitability Score: 1.8
VMScore: 383
Vector: AV:N/AC:M/Au:N/C:N/I:N/A:P

Vulnerability Summary

QPDF 9.x up to and including 9.1.1 and 10.x up to and including 10.0.4 has a heap-based buffer overflow in Pl_ASCII85Decoder::write (called from Pl_AES_PDF::flush and Pl_AES_PDF::finish) when a certain downstream write fails.

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Vendor Advisories

Amazon Linux 2: ALAS2-2023-2104
QPDF 9x through 911 and 10x through 1004 has a heap-based buffer overflow in Pl_ASCII85Decoder::write (called from Pl_AES_PDF::flush and Pl_AES_PDF::finish) when a certain downstream write fails (CVE-2021-36978) ...

References

CWE-787https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=28262https://github.com/qpdf/qpdf/commit/dc92574c10f3e2516ec6445b88c5d584f40df4e5https://github.com/google/oss-fuzz-vulns/blob/main/vulns/qpdf/OSV-2020-2245.yamlhttps://lists.debian.org/debian-lts-announce/2023/08/msg00037.htmlhttps://github.com/qpdf/qpdf/issues/492https://security.gentoo.org/glsa/202401-20https://nvd.nist.govhttps://alas.aws.amazon.com/AL2/ALAS-2023-2104.html
CVSSv2
CVSSv2
CVSSv3
VMScore
Recommendations:
CVE-2024-5248CVE-2024-3110CVE-2024-5552CVE-2024-29415HTML injectionCVE-2024-3095TCPtype confusionCVE-2024-1800
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