CVE-2015-0208: Null Pointer Dereference
First published: Mon Mar 16 2015(Updated: )
The ASN.1 signature-verification implementation in the rsa_item_verify function in crypto/rsa/rsa_ameth.c in OpenSSL 1.0.2 before 1.0.2a allows remote attackers to cause a denial of service (NULL pointer dereference and application crash) via crafted RSA PSS parameters to an endpoint that uses the certificate-verification feature.
Credit: secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/openssl | <1.0.2 | 1.0.2 |
| OpenSSL libcrypto | =1.0.2 | |
| OpenSSL libcrypto | =1.0.2-beta1 | |
| OpenSSL libcrypto | =1.0.2-beta2 | |
| OpenSSL libcrypto | =1.0.2-beta3 |
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Reference Links
- http://marc.info/?l=bugtraq&m=143748090628601&w=2
- http://marc.info/?l=bugtraq&m=144050155601375&w=2
- http://marc.info/?l=bugtraq&m=144050297101809&w=2
- http://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.html
- http://www.oracle.com/technetwork/topics/security/bulletinapr2015-2511959.html
- http://www.oracle.com/technetwork/topics/security/cpujan2016-2367955.html
- http://www.oracle.com/technetwork/topics/security/cpujul2015-2367936.html
- http://www.oracle.com/technetwork/topics/security/cpuoct2015-2367953.html
- http://www.securityfocus.com/bid/73230
- http://www.securitytracker.com/id/1031929
- https://bto.bluecoat.com/security-advisory/sa92
- https://bugzilla.redhat.com/show_bug.cgi?id=1202369
- https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf
- https://git.openssl.org/?p=openssl.git;a=commit;h=4b22cce3812052fe64fc3f6d58d8cc884e3cb834
- https://kc.mcafee.com/corporate/index?page=content&id=SB10110
- https://security.gentoo.org/glsa/201503-11
- https://www.openssl.org/news/secadv_20150319.txt
- https://openssl.org/news/secadv_20150319.txt
- https://access.redhat.com/articles/1384453
- https://git.openssl.org/?p=openssl.git;a=commitdiff;h=4b22cce3812052fe64fc3f6d58d8cc884e3cb834
- https://git.openssl.org/?p=openssl.git%3Ba=commit%3Bh=4b22cce3812052fe64fc3f6d58d8cc884e3cb834
Frequently Asked Questions
What is the severity of CVE-2015-0208?
CVE-2015-0208 has a severity of medium due to its potential to cause denial of service through a crash.
How do I fix CVE-2015-0208?
To fix CVE-2015-0208, upgrade to OpenSSL version 1.0.2a or later.
Which versions of OpenSSL are affected by CVE-2015-0208?
CVE-2015-0208 affects OpenSSL versions 1.0.2 and all its beta versions prior to 1.0.2a.
Can CVE-2015-0208 be exploited remotely?
Yes, CVE-2015-0208 can be exploited remotely by sending crafted RSA PSS parameters.
What impact does CVE-2015-0208 have on applications using OpenSSL?
Applications using vulnerable versions of OpenSSL may experience crashes due to NULL pointer dereference.
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