Vulnerability record · CVE-2010-0433 · published 5 March 2010

CVE-2010-0433: Openssl improper input validation vulnerability

OOpenssl · Openssl

The kssl_keytab_is_available function in ssl/kssl.c in OpenSSL before 0.9.8n, when Kerberos is enabled but Kerberos configuration files cannot be opened, does not check a certain return value, which allows remote attackers to cause a denial of service (NULL pointer dereference and daemon crash) via SSL cipher negotiation, as demonstrated by a chroot installation of Dovecot or stunnel without Kerberos configuration files inside the chroot.

4.3 CVSS 2.0 Medium EPSS 7.9% · top 5.5% CWE-20 · Improper input validation

4.3CVSS 2.0 base score

7.9%EPSS exploitation probability, 30 days

NoNot in CISA KEV

1Affected product versions listed by NVD

62References

16 Jun 2026Last modified by NVD

Description

AV:N/AC:M/Au:N/C:N/I:N/A:P

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

OOpenssl Openssl

References

Link	Tags
http://aix.software.ibm.com/aix/efixes/security/openssl_advisory.asc
http://cvs.openssl.org/chngview?cn=19374
http://groups.google.com/group/mailing.openssl.users/browse_thread/thread/c3e1ab0034ca4b4c/66aa896c3a78b2f7
http://lists.fedoraproject.org/pipermail/package-announce/2010-April/038587.html
http://lists.fedoraproject.org/pipermail/package-announce/2010-April/039561.html
http://marc.info/?l=bugtraq&m=127128920008563&w=2
http://marc.info/?l=bugtraq&m=127557640302499&w=2
http://secunia.com/advisories/39461
http://secunia.com/advisories/39932
http://secunia.com/advisories/42724
http://secunia.com/advisories/42733
http://secunia.com/advisories/43311
http://www.mail-archive.com/dovecot%40dovecot.org/msg26224.html
http://www.mandriva.com/security/advisories?name=MDVSA-2010:076
http://www.openssl.org/news/changelog.html
http://www.openwall.com/lists/oss-security/2010/03/03/5
http://www.securityfocus.com/archive/1/516397/100/0/threaded
http://www.vmware.com/security/advisories/VMSA-2011-0003.html
http://www.vmware.com/support/vsphere4/doc/vsp_vc41_u1_rel_notes.html
http://www.vupen.com/english/advisories/2010/0839
http://www.vupen.com/english/advisories/2010/0916
http://www.vupen.com/english/advisories/2010/0933
http://www.vupen.com/english/advisories/2010/1216
https://bugzilla.redhat.com/show_bug.cgi?id=567711
https://bugzilla.redhat.com/show_bug.cgi?id=569774
https://kb.bluecoat.com/index?page=content&id=SA50
https://lists.balabit.com/pipermail/syslog-ng-announce/2011-January/000101.html
https://lists.balabit.com/pipermail/syslog-ng-announce/2011-January/000102.html
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12260
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6718
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9856
http://aix.software.ibm.com/aix/efixes/security/openssl_advisory.asc
http://cvs.openssl.org/chngview?cn=19374
http://groups.google.com/group/mailing.openssl.users/browse_thread/thread/c3e1ab0034ca4b4c/66aa896c3a78b2f7
http://lists.fedoraproject.org/pipermail/package-announce/2010-April/038587.html
http://lists.fedoraproject.org/pipermail/package-announce/2010-April/039561.html
http://marc.info/?l=bugtraq&m=127128920008563&w=2
http://marc.info/?l=bugtraq&m=127557640302499&w=2
http://secunia.com/advisories/39461
http://secunia.com/advisories/39932

Track CVE-2010-0433 inside VULONE

Watch it alongside the ransomware crews, C2 infrastructure and forum chatter that reference it, query it through the API and pull it into your SIEM over TAXII.

Start free Open in platform

Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

7.5CVE-2014-0160OpenSSL TLS/DTLS Heartbeat Extension Out-of-Bounds Read (Heartbleed)OpenSSL 1.0.1 before 1.0.1g mishandles Heartbeat Extension packets in its TLS and DTLS implementations, causing an out-of-bounds read of process memo…KEVEPSS 100%analysed7 Apr 2014 10.0CVE-2009-3245Openssl improper input validation vulnerabilityOpenSSL before 0.9.8m does not check for a NULL return value from bn_wexpand function calls in (1) crypto/bn/bn_div.c, (2) crypto/bn/bn_gf2m.c, (3) c…EPSS 6.5%5 Mar 2010 10.0CVE-2006-3738OpenSSL SSL_get_shared_ciphers buffer overflow via long cipher listOpenSSL versions before 0.9.7l and 0.9.8d contain a buffer overflow in the SSL_get_shared_ciphers function, triggered by a long list of ciphers. The …EPSS 49%analysed28 Sep 2006 9.8CVE-2026-63073Openssl vulnerabilityIssue summary: OpenSSL CMP response validation passed an unexpected response sender distinguished name directly as the format string to `ERR_raise_da…EPSS 1.2%25 Aug 2026 9.8CVE-2026-31789Openssl out-of-bounds write vulnerabilityIssue summary: Converting an excessively large OCTET STRING value to a hexadecimal string leads to a heap buffer overflow on 32 bit platforms. Impact…EPSS 0.33%7 Apr 2026 9.8CVE-2022-2274OpenSSL 3.0.4 RSA AVX512IFMA memory corruptionOpenSSL 3.0.4 introduced a bug in the RSA implementation for X86_64 CPUs supporting AVX512IFMA instructions, causing 2048-bit private key operations …EPSS 46%analysed1 Jul 2022 9.8CVE-2021-3711OpenSSL SM2 decryption buffer overflowOpenSSL's SM2 decryption code miscalculates the output buffer size needed by EVP_PKEY_decrypt(), so the first sizing call can return a value smaller …EPSS 88%analysed24 Aug 2021 9.8CVE-2016-6309OpenSSL 1.1.0a statem use-after-free on realloc in TLS session handlingOpenSSL 1.1.0a's statem/statem.c fails to account for memory-block movement after a realloc call, leaving a dangling pointer that can be used after f…EPSS 70%analysed26 Sep 2016

Source: NIST National Vulnerability Database (record CVE-2010-0433), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.