High severity7.5NVD Advisory· Published Nov 12, 2020· Updated Jun 17, 2026
CVE-2020-25658
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.
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Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
rsaPyPI | >= 2.1, < 4.7 | 4.7 |
Affected products
19- cpe:2.3:a:python-rsa_project:python-rsa:*:*:*:*:*:*:*:*Range: >=2.1,<4.7
cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*+ 2 more
- cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*
- cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*
- cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*
- ghsa-coords12 versionspkg:pypi/rsapkg:rpm/opensuse/python-rsa&distro=openSUSE%20Leap%2015.3pkg:rpm/opensuse/python-rsa&distro=openSUSE%20Leap%2015.4pkg:rpm/opensuse/python-rsa&distro=openSUSE%20Leap%20Micro%205.2pkg:rpm/opensuse/python-rsa&distro=openSUSE%20Tumbleweedpkg:rpm/suse/python-rsa&distro=SUSE%20Linux%20Enterprise%20Micro%205.2pkg:rpm/suse/python-rsa&distro=SUSE%20Linux%20Enterprise%20Micro%205.3pkg:rpm/suse/python-rsa&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP3pkg:rpm/suse/python-rsa&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP4pkg:rpm/suse/python-rsa&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Package%20Hub%2015%20SP3pkg:rpm/suse/python-rsa&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Package%20Hub%2015%20SP4pkg:rpm/suse/python-rsa&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Public%20Cloud%2012
>= 2.1, < 4.7+ 11 more
- (no CPE)range: >= 2.1, < 4.7
- (no CPE)range: < 3.4.2-150000.3.7.1
- (no CPE)range: < 3.4.2-150000.3.7.1
- (no CPE)range: < 3.4.2-150000.3.7.1
- (no CPE)range: < 4.7.2-1.5
- (no CPE)range: < 3.4.2-150000.3.7.1
- (no CPE)range: < 3.4.2-150000.3.7.1
- (no CPE)range: < 3.4.2-150000.3.7.1
- (no CPE)range: < 3.4.2-150000.3.7.1
- (no CPE)range: < 3.4.2-150000.3.7.1
- (no CPE)range: < 3.4.2-150000.3.7.1
- (no CPE)range: < 3.1.4-12.19.2
- Range: after 3.0 (inclusive)
Patches
Vulnerability mechanics
References
20- github.com/sybrenstuvel/python-rsa/issues/165nvdExploitIssue TrackingThird Party AdvisoryWEB
- bugzilla.redhat.com/show_bug.cginvdIssue TrackingThird Party AdvisoryWEB
- github.com/advisories/GHSA-xrx6-fmxq-rjj2ghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2020-25658ghsaADVISORY
- access.redhat.com/errata/RHSA-2020:5634ghsaWEB
- access.redhat.com/errata/RHSA-2021:0637ghsaWEB
- access.redhat.com/errata/RHSA-2022:1716ghsaWEB
- access.redhat.com/security/cve/CVE-2020-25658ghsaWEB
- bugzilla.redhat.com/show_bug.cgighsaWEB
- github.com/pypa/advisory-database/tree/main/vulns/rsa/PYSEC-2020-100.yamlghsaWEB
- github.com/sybrenstuvel/python-rsa/commit/dae8ce0d85478e16f2368b2341632775313d41edghsaWEB
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2SAF67KDGSOHLVFTRDOHNEAFDRSSYIWAghsaWEB
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/APF364QJ2IYLPDNVFBOEJ24QP2WLVLJPghsaWEB
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QY4PJWTYSOV7ZEYZVMYIF6XRU73CY6O7ghsaWEB
- lists.fedoraproject.org/archives/list/[email protected]/message/2SAF67KDGSOHLVFTRDOHNEAFDRSSYIWAghsaWEB
- lists.fedoraproject.org/archives/list/[email protected]/message/APF364QJ2IYLPDNVFBOEJ24QP2WLVLJPghsaWEB
- lists.fedoraproject.org/archives/list/[email protected]/message/QY4PJWTYSOV7ZEYZVMYIF6XRU73CY6O7ghsaWEB
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2SAF67KDGSOHLVFTRDOHNEAFDRSSYIWA/nvd
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/APF364QJ2IYLPDNVFBOEJ24QP2WLVLJP/nvd
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QY4PJWTYSOV7ZEYZVMYIF6XRU73CY6O7/nvd
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