CVE-2021-24115 Information disclosure in n/a

Critical 9.8 Published 22 Feb 2021 Updated 3 Aug 2024

Attackers can potentially recover sensitive data via timing side-channels in Botan's base32, base58, base64, and hex encoding/decoding operations.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: Available

What is CVE-2021-24115?

CVE-2021-24115 is a critical vulnerability in n/a, published on 22 Feb 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

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

Which versions are affected by CVE-2021-24115?

It affects 1 product.

Linux distribution packages (4)

`Botan` SUSE:Package Hub 15 SP1	All versions	`2.10.0-bp152.4.3.1`
`Botan` SUSE:Package Hub 15 SP2	All versions	`2.10.0-bp152.4.3.1`
`Botan` SUSE:Package Hub 15 SP2	All versions	`2.10.0-bp152.4.6.1`
`Botan` openSUSE:Leap 15.2	All versions	`2.10.0-bp152.4.3.1`

Products include Botan Project Botan.

How do I fix CVE-2021-24115?

Upgrade to a fixed version.

Is CVE-2021-24115 being exploited?

There is no known exploitation of CVE-2021-24115 in the wild and no public exploit code.

Sources

Also known as ALPINE-CVE-2021-24115, AZL-44961, DEBIAN-CVE-2021-24115, GHSA-cj2q-f8cp-cqmf, MGASA-2021-0329, UBUNTU-CVE-2021-24115 and 2 more.