| Name | CVE-2020-25658 |
| Description | It was found that python-rsa is vulnerable to Bleichenbacher timing attacks. An attacker can use this flaw via the RSA decryption API to decrypt parts of the cipher text encrypted with RSA. |
| Source | CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| Debian Bugs | 974685 |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| python-rsa (PTS) | bullseye | 4.0-4 | vulnerable |
| bookworm | 4.8-1 | vulnerable |
| sid, forky, trixie | 4.9-2 | vulnerable |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|
| python-rsa | source | (unstable) | (unfixed) | unimportant | | 974685 |
Notes
https://github.com/sybrenstuvel/python-rsa/issues/165
Presumed fix upstream in 4.7 does not address the issue:
https://github.com/sybrenstuvel/python-rsa/issues/165#issuecomment-727580521
The library doesn't intend to guard against this: https://github.com/sybrenstuvel/python-rsa/issues/165#issuecomment-1603113867