cbcvebase.
CVE-2021-36978
published 2021-07-20

CVE-2021-36978: QPDF 9.x through 9.1.1 and 10.x through 10.0.4 has a heap-based buffer overflow in Pl_ASCII85Decoder::write (called from Pl_AES_PDF::flush and…

PriorityP423medium5.5CVSS 3.1
AVLACLPRNUIRSUCNINAH
EPSS
1.27%
66.6th percentile
QPDF 9.x through 9.1.1 and 10.x through 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.

Affected

10 ranges
VendorProductVersion rangeFixed in
debianqpdf< qpdf 10.1.0-1 (bookworm)qpdf 10.1.0-1 (bookworm)
qpdf_projectqpdf>= 0 < 10.1.0-110.1.0-1
qpdf_projectqpdf>= 0 < 10.1.0-110.1.0-1
qpdf_projectqpdf>= 0 < 10.1.0-110.1.0-1
qpdf_projectqpdf>= 0 < 10.1.0-110.1.0-1
qpdf_projectqpdf>= 0 < 8.0.2-3ubuntu0.18.0.2-3ubuntu0.1
qpdf_projectqpdf>= 0 < 9.1.1-1ubuntu0.19.1.1-1ubuntu0.1
qpdf_projectqpdf>= 0 < 8.0.2-3~16.04.1+esm18.0.2-3~16.04.1+esm1
qpdf_projectqpdf10.0.0 – 10.0.4
qpdf_projectqpdf9.0.0 – 9.1.1

CVSS provenance

nvdv3.15.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
nvdv2.04.3MEDIUMAV:N/AC:M/Au:N/C:N/I:N/A:P
osv5.5MEDIUM
vendor_debian5.5MEDIUM
vendor_redhat5.5MEDIUM
vendor_ubuntu3.3LOW
Stop checking back — get the weekly exploitation signal.

Every Monday: what got weaponized or added to CISA KEV in the last seven days — each CVE cross-linked to its PoC, Nuclei template, and detection rule. Free, one email a week, unsubscribe in one click.