CVE-2015-0285
First published: Mon Mar 16 2015(Updated: )
The ssl3_client_hello function in s3_clnt.c in OpenSSL 1.0.2 before 1.0.2a does not ensure that the PRNG is seeded before proceeding with a handshake, which makes it easier for remote attackers to defeat cryptographic protection mechanisms by sniffing the network and then conducting a brute-force attack.
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.fortiguard.com/advisory/2015-03-24-openssl-vulnerabilities-march-2015
- 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/73234
- http://www.securitytracker.com/id/1031929
- https://bto.bluecoat.com/security-advisory/sa92
- https://bugzilla.redhat.com/show_bug.cgi?id=1202410
- https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf
- https://git.openssl.org/gitweb/?p=openssl.git;a=commit;h=e1b568dd2462f7cacf98f3d117936c34e2849a6b
- 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/gitweb/?p=openssl.git%3Ba=commit%3Bh=e1b568dd2462f7cacf98f3d117936c34e2849a6b
Frequently Asked Questions
What is the severity of CVE-2015-0285?
CVE-2015-0285 is considered a high-severity vulnerability due to the potential exposure of sensitive data through insufficient PRNG seeding.
How do I fix CVE-2015-0285?
To fix CVE-2015-0285, you should upgrade OpenSSL to version 1.0.2a or later.
What impact does CVE-2015-0285 have on my system?
CVE-2015-0285 may allow attackers to conduct brute-force attacks on encrypted communications due to weak randomness in cryptographic operations.
Who is affected by CVE-2015-0285?
CVE-2015-0285 affects users of OpenSSL versions 1.0.2 and earlier, as well as beta releases of 1.0.2.
Is CVE-2015-0285 exploitable remotely?
Yes, CVE-2015-0285 can be exploited remotely by attackers if the vulnerable OpenSSL version is used in network applications.
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