Bug 2448503 (CVE-2026-27459)
| Summary: | CVE-2026-27459 pyOpenSSL: DTLS cookie callback buffer overflow | ||
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| Product: | [Other] Security Response | Reporter: | OSIDB Bzimport <bzimport> |
| Component: | vulnerability | Assignee: | Product Security DevOps Team <prodsec-dev> |
| Status: | NEW --- | QA Contact: | |
| Severity: | high | Docs Contact: | |
| Priority: | high | ||
| Version: | unspecified | CC: | adudiak, anthomas, aprice, bdettelb, caswilli, doconnor, dranck, dschmidt, eborisov, eglynn, ehelms, erezende, ggainey, jdobes, jjoyce, jkoehler, jlanda, jmitchel, jpretori, jsamir, jschluet, juwatts, jwong, kaycoth, kshier, lball, lbrazdil, lhh, lphiri, mburns, mgarciac, mhulan, mminar, ngough, nmoumoul, oezr, omaciel, orabin, osousa, pbohmill, pcreech, rbiba, rchan, simaishi, smallamp, smcdonal, sskracic, stcannon, teagle, tmalecek, tpfromme, ttakamiy, veshanka, yguenane |
| Target Milestone: | --- | Keywords: | Security |
| Target Release: | --- | ||
| Hardware: | All | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | --- | |
| Doc Text: |
A flaw was found in pyOpenSSL. The set_cookie_generate_callback callback function can be used to generate DTLS cookies. When the callback returns a cookie string or byte sequence longer than 256 bytes, a buffer overflow can be triggered due to a missing bounds checking before copying the data to a fixed-size buffer provided by the underlying OpenSSL library.
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Story Points: | --- |
| Clone Of: | Environment: | ||
| Last Closed: | Type: | --- | |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
| Bug Depends On: | 2448655, 2448652 | ||
| Bug Blocks: | |||
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Description
OSIDB Bzimport
2026-03-18 00:02:08 UTC
This issue has been addressed in the following products: RHUI 4 for RHEL 8 Via RHSA-2026:10754 https://access.redhat.com/errata/RHSA-2026:10754 This issue has been addressed in the following products: Red Hat Ansible Automation Platform 2.6 for RHEL 10 Red Hat Ansible Automation Platform 2.6 for RHEL 9 Via RHSA-2026:13508 https://access.redhat.com/errata/RHSA-2026:13508 This issue has been addressed in the following products: Red Hat Ansible Automation Platform 2.5 for RHEL 9 Red Hat Ansible Automation Platform 2.5 for RHEL 8 Via RHSA-2026:13512 https://access.redhat.com/errata/RHSA-2026:13512 This issue has been addressed in the following products: Red Hat Satellite 6.17 for RHEL 9 Via RHSA-2026:14873 https://access.redhat.com/errata/RHSA-2026:14873 This issue has been addressed in the following products: Red Hat Satellite 6.16 for RHEL 8 Red Hat Satellite 6.16 for RHEL 9 Via RHSA-2026:14874 https://access.redhat.com/errata/RHSA-2026:14874 |