PyCryptodome and pycryptodomex before 3.19.1 allow side-channel leakage for OAEP…
Priority LOW 27CWE-203Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- High
- Impact type
- Information disclosure
- Confidentiality · integrity · availability
- High · None · None
- Fix status
- Partial Red Hat: 31 fixed, 2 without a fix
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA, GitHub and Red Hat. Impact type from CWE-203.
Summary
PyCryptodome and pycryptodomex before 3.19.1 allow side-channel leakage for OAEP decryption, exploitable for a Manger attack.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00618 49th percentileScored 2026-11-07
Fix Partial pycryptodomex (PyPI): 3.19.1pycryptodome (PyPI): 3.19.1Red Hat: 6 advisoriesRed Hat: 31 fixed, 2 without a fix
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
| — | pycryptodomex (PyPI) | before 3.19.1 | 3.19.1 | Patch available | GHSA-j225-cvw7-qrx7 |
| — | pycryptodome (PyPI) | before 3.19.1 | 3.19.1 | Patch available | GHSA-j225-cvw7-qrx7 |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
- pycryptodomex (PyPI) Vendor— Affected before 3.19.1 Fixed in 3.19.1 Patch available GHSA-j225-cvw7-qrx7
- pycryptodome (PyPI) Vendor— Affected before 3.19.1 Fixed in 3.19.1 Patch available GHSA-j225-cvw7-qrx7
CPE configurations NVD · 2
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:pycryptodome:pycryptodome:*:*:*:*:*:python:*:* | before 3.19.1 | Vulnerable | Pycryptodome |
| cpe:2.3:a:pycryptodome:pycryptodomex:*:*:*:*:*:python:*:* | before 3.19.1 | Vulnerable | Pycryptodome |
- cpe:2.3:a:pycryptodome:pycryptodome:*:*:*:*:*:python:*:* Versions before 3.19.1 Vulnerable ·Pycryptodome
- cpe:2.3:a:pycryptodome:pycryptodomex:*:*:*:*:*:python:*:* Versions before 3.19.1 Vulnerable ·Pycryptodome
Remediation
- Fix · GHSA-j225-cvw7-qrx7 pycryptodomex (PyPI) Fixed in 3.19.1 Advisory →
- Fix · GHSA-j225-cvw7-qrx7 pycryptodome (PyPI) Fixed in 3.19.1 Advisory →
Red Hat 6 advisories
- RHSA-2024:2968 Released 2024-05-22 · Red Hat rating Moderatefence-agents security and bug fix update
- Red Hat Enterprise Linux AppStream (v. 8) fence-agents-4.2.1-129.el8, fence-agents-all-4.2.1-129.el8, fence-agents-amt-ws-4.2.1-129.el8 +40
- Red Hat Enterprise Linux HighAvailability (v. 8) fence-agents-aliyun-4.2.1-129.el8, fence-agents-aws-4.2.1-129.el8, fence-agents-azure-arm-4.2.1-129.el8 +2
- Red Hat Enterprise Linux ResilientStorage (v. 8) fence-agents-aliyun-4.2.1-129.el8, fence-agents-aws-4.2.1-129.el8, fence-agents-azure-arm-4.2.1-129.el8 +2
- RHSA-2024:2952 Released 2024-05-22 · Red Hat rating Moderateresource-agents security and bug fix update
- Red Hat Enterprise Linux HighAvailability (v. 8) resource-agents-4.9.0-54.el8, resource-agents-aliyun-4.9.0-54.el8, resource-agents-gcp-4.9.0-54.el8 +1
- Red Hat Enterprise Linux ResilientStorage (v. 8) resource-agents-4.9.0-54.el8, resource-agents-aliyun-4.9.0-54.el8, resource-agents-gcp-4.9.0-54.el8 +1
- RHSA-2024:2132 Released 2024-04-30 · Red Hat rating Moderatefence-agents security and bug fix update
- Red Hat Enterprise Linux AppStream (v. 9) fence-agents-4.10.0-62.el9, fence-agents-common-4.10.0-62.el9, fence-agents-compute-4.10.0-62.el9 +11
- Red Hat Enterprise Linux HighAvailability (v. 9) fence-agents-aliyun-4.10.0-62.el9, fence-agents-all-4.10.0-62.el9, fence-agents-amt-ws-4.10.0-62.el9 +39
- Red Hat Enterprise Linux ResilientStorage (v. 9) fence-agents-aliyun-4.10.0-62.el9, fence-agents-all-4.10.0-62.el9, fence-agents-amt-ws-4.10.0-62.el9 +39
Show 3 more Red Hat advisories
- RHSA-2024:2010 Released 2024-04-23 · Red Hat rating ImportantSatellite 6.15.0 release
- Red Hat Satellite 6.15 for RHEL 8 foreman-3.9.1.6-1.el8sat, foreman-cli-3.9.1.6-1.el8sat, foreman-debug-3.9.1.6-1.el8sat +28
- RHSA-2024:1155 Released 2024-03-05 · Red Hat rating Moderatefence-agents security update
- Red Hat Enterprise Linux AppStream EUS (v.9.0) fence-agents-4.10.0-20.el9_0.11, fence-agents-common-4.10.0-20.el9_0.11, fence-agents-compute-4.10.0-20.el9_0.11 +12
- Red Hat Enterprise Linux High Availability EUS (v.9.0) fence-agents-aliyun-4.10.0-20.el9_0.11, fence-agents-all-4.10.0-20.el9_0.11, fence-agents-amt-ws-4.10.0-20.el9_0.11 +39
- Red Hat Enterprise Linux Resilient Storage EUS (v.9.0) fence-agents-aliyun-4.10.0-20.el9_0.11, fence-agents-all-4.10.0-20.el9_0.11, fence-agents-amt-ws-4.10.0-20.el9_0.11 +39
- RHSA-2024:1057 Released 2024-02-29 · Red Hat rating ImportantRed Hat Ansible Automation Platform 2.4 Product Security and Bug Fix Update
- Red Hat Ansible Automation Platform 2.4 for RHEL 8 ansible-automation-platform-installer-2.4-6.el8ap, ansible-rulebook-1.0.5-1.el8ap, automation-eda-controller-1.0.5-1.el8ap +14
- Red Hat Ansible Automation Platform 2.4 for RHEL 9 ansible-automation-platform-installer-2.4-6.el9ap, ansible-rulebook-1.0.5-1.el9ap, automation-eda-controller-1.0.5-1.el9ap +14
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 7 | Affected | No fix planned: Out of support scope |
| Red Hat Storage 3 | Affected | No fix planned: Out of support scope |
| Red Hat Ansible Automation Platform 2.4 for RHEL 8 | Fixed | RHSA-2024:1057 |
| Red Hat Ansible Automation Platform 2.4 for RHEL 9 | Fixed | RHSA-2024:1057 |
| Red Hat Enterprise Linux AppStream (v. 8) | Fixed | RHSA-2024:2968 |
| Red Hat Enterprise Linux AppStream (v. 9) | Fixed | RHSA-2024:2132 |
| Red Hat Enterprise Linux AppStream AUS (v.8.4) | Fixed | — |
| Red Hat Enterprise Linux AppStream E4S (v.8.4) | Fixed | — |
| Red Hat Enterprise Linux AppStream EUS (v.8.6) | Fixed | — |
| Red Hat Enterprise Linux AppStream EUS (v.8.8) | Fixed | — |
| Red Hat Enterprise Linux AppStream EUS (v.9.0) | Fixed | RHSA-2024:1155 |
| Red Hat Enterprise Linux AppStream EUS (v.9.2) | Fixed | — |
| Red Hat Enterprise Linux AppStream TUS (v.8.4) | Fixed | — |
| Red Hat Enterprise Linux High Availability (v. 8) | Fixed | — |
| Red Hat Enterprise Linux High Availability (v. 9) | Fixed | — |
| Red Hat Enterprise Linux High Availability AUS (v.8.4) | Fixed | — |
| Red Hat Enterprise Linux High Availability EUS (v.8.6) | Fixed | — |
| Red Hat Enterprise Linux High Availability EUS (v.8.8) | Fixed | — |
| Red Hat Enterprise Linux High Availability EUS (v.9.0) | Fixed | RHSA-2024:1155 |
| Red Hat Enterprise Linux High Availability EUS (v.9.2) | Fixed | — |
| Red Hat Enterprise Linux HighAvailability (v. 8) | Fixed | RHSA-2024:2952, RHSA-2024:2968 |
| Red Hat Enterprise Linux HighAvailability (v. 9) | Fixed | RHSA-2024:2132 |
| Red Hat Enterprise Linux HighAvailability E4S (v.8.4) | Fixed | — |
| Red Hat Enterprise Linux HighAvailability TUS (v.8.4) | Fixed | — |
| Red Hat Enterprise Linux Resilient Storage (v. 8) | Fixed | — |
| Red Hat Enterprise Linux Resilient Storage (v. 9) | Fixed | — |
| Red Hat Enterprise Linux Resilient Storage EUS (v.8.6) | Fixed | — |
| Red Hat Enterprise Linux Resilient Storage EUS (v.8.8) | Fixed | — |
| Red Hat Enterprise Linux Resilient Storage EUS (v.9.0) | Fixed | RHSA-2024:1155 |
| Red Hat Enterprise Linux Resilient Storage EUS (v.9.2) | Fixed | — |
| Red Hat Enterprise Linux ResilientStorage (v. 8) | Fixed | RHSA-2024:2952, RHSA-2024:2968 |
| Red Hat Enterprise Linux ResilientStorage (v. 9) | Fixed | RHSA-2024:2132 |
| Red Hat Satellite 6.15 for RHEL 8 | Fixed | RHSA-2024:2010 |
Not affected: 10 products
- Red Hat Ansible Automation Platform 2
- Red Hat Ansible Automation Platform 2.4 for RHEL 8
- Red Hat Ansible Automation Platform 2.4 for RHEL 9
- Red Hat OpenShift Container Platform 4
- Red Hat OpenStack Platform 16.1
- Red Hat OpenStack Platform 16.2
- Red Hat OpenStack Platform 17.1
- Red Hat OpenStack Platform 18.0
- Red Hat Satellite 6.15 for RHEL 8
- Service Telemetry Framework 1.5
Timeline
- 2026-10-02 Threatist record created from CVE-2023-52323
- 2026-10-03 Alias added: GHSA-j225-cvw7-qrx7
- 2026-10-30 Fix available: Red Hat Enterprise Linux AppStream EUS (v.8.8), Red Hat Enterprise Linux High Availability (v. 8), Red Hat Enterprise Linux High Availability EUS (v.8.8) +2 · Red Hat
References
Other 5
- https://github.com/Legrandin/pycryptodome/blob/master/Changelog.rst
- https://pypi.org/project/pycryptodomex/#history
- https://github.com/Legrandin/pycryptodome/commit/0deea1bfe1489e8c80d2053bbb06a1aa0b181ebd
- https://github.com/Legrandin/pycryptodome
- https://github.com/pypa/advisory-database/tree/main/vulns/pycryptodomex/PYSEC-2024-3.yaml
More Pycryptodome vulnerabilities
- TI-2018-11096 PyCryptodome before 3.6.6 has an integer overflow in the data_len variable in AESNI.c… CVSS 3.1HIGH 7.5
Sources
- CVE-2023-52323 · CVE Program
- CVE-2023-52323 · NVD
- FIRST EPSS
- GHSA-j225-cvw7-qrx7 · GitHub Advisory Database · CC BY 4.0
- CVE-2023-52323 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences