Description
crypto/x509/x509_vfy.c in OpenSSL 1.0.x before 1.0.0e does not initialize certain structure members, which makes it easier for remote attackers to bypass CRL validation by using a nextUpdate value corresponding to a time in the past.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | openssl | 1.0.0e-1 | — |
| Debian 13 | openssl | 1.0.0e-1 | — |
| Debian 12 | openssl | 1.0.0e-1 | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 6 | openssl +3 | 1.0.0-10.el6_1.5 | RHSA-2011:1409 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | openssl-1_1 | 1.1.1l-1.2 | openSUSE-SU-2024:11127-1 |
Advisories 2
- RHSA-2011:1409 Red Hat Security Advisory: openssl security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- openSUSE-SU-2024:11127-1 libopenssl-1_1-devel-1.1.1l-1.2 on GA media SUSE / openSUSE Security Updates · May 7, 2025
References
- HPSBMU02752 vendor-advisory
- http://www-01.ibm.com/support/docview.wss?uid=ssg1S1004564
- FEDORA-2012-18035 vendor-advisory
- FEDORA-2011-12233 vendor-advisory
- http://cvs.openssl.org/chngview?cn=21349
- 45956 third-party-advisory
- MDVSA-2011:137 vendor-advisory
- FEDORA-2011-12281 vendor-advisory
- http://support.apple.com/kb/HT5784
- APPLE-SA-2013-06-04-1 vendor-advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=736087
- 1026012 vdb-entry
- http://openssl.org/news/secadv_20110906.txt
- 57353 third-party-advisory
- RHSA-2011:1409 vendor-advisory