cbcvebase.
CVE-2021-24115
published 2021-02-22

CVE-2021-24115: In Botan before 2.17.3, constant-time computations are not used for certain decoding and encoding operations (base32, base58, base64, and hex).

PriorityP346critical9.8CVSS 3.1
AVNACLPRNUINSUCHIHAH
EPSS
1.98%
78.2th percentile
In Botan before 2.17.3, constant-time computations are not used for certain decoding and encoding operations (base32, base58, base64, and hex).

Affected

5 ranges
VendorProductVersion rangeFixed in
botan_projectbotan< 2.17.32.17.3
botan_projectbotan>= 0 < 2.17.3+dfsg-12.17.3+dfsg-1
botan_projectbotan>= 0 < 2.17.3+dfsg-12.17.3+dfsg-1
botan_projectbotan>= 0 < 2.17.3+dfsg-12.17.3+dfsg-1
debianbotan< botan 2.17.3+dfsg-1 (bookworm)botan 2.17.3+dfsg-1 (bookworm)

CVSS provenance

nvdv3.19.8CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
nvdv2.07.5HIGHAV:N/AC:L/Au:N/C:P/I:P/A:P
osv9.8CRITICAL
vendor_debian9.8CRITICAL
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.