CVE-2024-50383

Publication date 23 October 2024

Last updated 11 July 2025

Ubuntu priority

Medium

Why this priority?

Cvss 3 Severity Score

5.9 · Medium

Score breakdown

Description

Botan before 3.6.0, when certain GCC versions are used, has a compiler-induced secret-dependent operation in lib/utils/donna128.h in donna128 (used in Chacha-Poly1305 and x25519). An addition can be skipped if a carry is not set. This was observed for GCC 11.3.0 with -O2 on MIPS, and GCC on x86-i386. (Only 32-bit processors can be affected.)

Read the notes from the security team

Status

Package Ubuntu Release Status
botan 25.10 questing
Not affected
25.04 plucky
Not affected
24.10 oracular
Fixed 2.19.3+dfsg-1ubuntu2.1
24.04 LTS noble
Fixed 2.19.3+dfsg-1ubuntu2+esm1
22.04 LTS jammy
Fixed 2.19.1+dfsg-2ubuntu1+esm1
20.04 LTS focal
Vulnerable
18.04 LTS bionic Ignored changes too intrusive
oscar 25.10 questing
Needs evaluation
25.04 plucky
Needs evaluation
24.10 oracular Ignored end of life, was needs-triage
24.04 LTS noble
Needs evaluation
22.04 LTS jammy
Needs evaluation
20.04 LTS focal
Needs evaluation
thunderbird 25.10 questing
Not affected
25.04 plucky
Not affected
24.10 oracular
Not affected
24.04 LTS noble
Not affected
22.04 LTS jammy
Not affected
20.04 LTS focal Not in release

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Notes

rodrigo-zaiden

same as CVE-2024-50382

mdeslaur

we do not typically track embedded code copies in thunderbird packages since we update to new upstream releases. Marking as not-affected for thunderbird.

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package Patch details
botan

Severity score breakdown

Parameter Value
Base score 5.9 · Medium
Attack vector Network
Attack complexity High
Privileges required None
User interaction None
Scope Unchanged
Confidentiality High
Integrity impact None
Availability impact None
Vector CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

References

Related Ubuntu Security Notices (USN)

Other references