Multiple vulnerabilities in OpenSSL
| Risk | Medium |
| Patch available | YES |
| Number of vulnerabilities | 4 |
| CVE-ID | CVE-2014-3568 CVE-2014-3566 CVE-2014-3567 CVE-2014-3513 |
| CWE-ID | CWE-749 CWE-327 CWE-401 |
| Exploitation vector | Network |
| Public exploit | Public exploit code for vulnerability #2 is available. |
| Vulnerable software Subscribe |
OpenSSL Server applications / Encryption software |
| Vendor | OpenSSL Software Foundation |
Security Bulletin
This security bulletin contains information about 4 vulnerabilities.
1) Forced SSLv3 support
EUVDB-ID: #VU5215
Risk: Low
CVSSv3.1: 5.2 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C]
CVE-ID: CVE-2014-3568
CWE-ID:
CWE-749 - Exposed Dangerous Method or Function
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to force SSLv3 usage.
When OpenSSL is configured with "no-ssl3" as a build option, servers could accept and complete a SSL 3.0 handshake, and clients could be configured to send them. A remote attacker can force SSLv3 usage and perfom a variety of attacks against SSLv3 protocol
Successful exploitation of the vulnerability may allow an attacker to obtain potentially sensitive information.
Update OpenSSL to version 0.9.8zc, 1.0.0o or 1.0.1j.
Vulnerable software versionsOpenSSL: 0.9.8 - 1.0.1i
External linkshttp://www.openssl.org/news/secadv/20141015.txt
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
2) Information disclosure
EUVDB-ID: #VU5214
Risk: Medium
CVSSv3.1: 5.5 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N/E:F/RL:O/RC:C]
CVE-ID: CVE-2014-3566
CWE-ID:
CWE-327 - Use of a Broken or Risky Cryptographic Algorithm
Exploit availability: Yes
DescriptionThe vulnerability allows a remote attacker to perform MitM attack.
The vulnerability exists due to usage of insecure SSLv3 protocol in OpenSSL. A remote attacker can force the current connection between user and server to be downgraded to SSLv3 protocol and then use padding-oracle attack on Cypher-block chaining (CBC) mode to decrypt encrypted communication.
Successful exploitation of the vulnerability may allow an attacker to read encrypted communications in clear text.
Note: The vulnerability is known as POODLE.
Update OpenSSL to version 0.9.8zc, 1.0.0o or 1.0.1j.
Vulnerable software versionsOpenSSL: 0.9.8 - 1.0.1i
External linkshttp://www.openssl.org/news/secadv/20141015.txt
http://www.kb.cert.org/vuls/id/577193
http://marc.info/?l=openssl-dev&m=141333049205629&w=2
http://tools.ietf.org/html/draft-ietf-tls-downgrade-scsv-00
http://www.openssl.org/~bodo/ssl-poodle.pdf
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability. However, a fully functional exploit for this vulnerability is available.
3) Session Ticket Memory Leak
EUVDB-ID: #VU5213
Risk: Medium
CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2014-3567
CWE-ID:
CWE-401 - Missing release of memory after effective lifetime
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to cause denial of service.
The vulnerability exists due to an error when handling integrity of session tickets in OpenSSL. A remote attacker can send a large number of invalid session tickets and cause denial of service conditions.
Successful exploitation of the vulnerability may allow an attacker to perform a denial of service (DoS) attack.
Update OpenSSL to version 0.9.8zc, 1.0.0o or 1.0.1j.
Vulnerable software versionsOpenSSL: 0.9.8 - 1.0.1i
External linkshttp://www.openssl.org/news/secadv/20141015.txt
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
4) SRTP Memory Leak
EUVDB-ID: #VU5212
Risk: Medium
CVSSv3.1: 6.3 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:L/E:U/RL:O/RC:C]
CVE-ID: CVE-2014-3513
CWE-ID:
CWE-401 - Missing release of memory after effective lifetime
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to obtain potentially sensitive information and cause denial of service.
The vulnerability exists due to a parsing error within DTLS SRTP extension in OpenSSL. A remote attacker can send a carefully crafted handshake message and free up to 64k of memory or cause denial of service conditions.
Successful exploitation of the vulnerability may allow an attacker to obtain potentially sensitive data, stored in system memory, or cause the affected service to fail.
Update OpenSSL to version 1.0.1j.
Vulnerable software versionsOpenSSL: 1.0.1 - 1.0.1i
External linkshttp://www.openssl.org/news/secadv/20141015.txt
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
