| 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, LWN, oss-sec, fulldisc, 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) | jessie | 3.1.4-1+deb8u1 | vulnerable |
| stretch | 3.4.2-1 | vulnerable |
| buster | 4.0-2 | vulnerable |
| bullseye | 4.0-4 | vulnerable |
| bookworm | 4.8-1 | vulnerable |
| sid, 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) | | | 974685 |
Notes
[bookworm] - python-rsa <no-dsa> (Minor issue)
[bullseye] - python-rsa <no-dsa> (Minor issue)
[buster] - python-rsa <no-dsa> (Minor issue)
[stretch] - python-rsa <no-dsa> (Minor issue)
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
[jessie] - python-rsa <postponed> (Minor issue, no full fix yet, revisit later)