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CVE-2015-0293

29
FAUCET Score

CVE-2015-0293 describes a denial-of-service vulnerability in OpenSSL's SSLv2 implementation, affecting versions prior to 0.9.8zf, 1.0.0r, 1.0.1m, and 1.0.2a. An unauthenticated remote attacker can trigger an assertion failure and daemon exit by sending a specially crafted CLIENT-MASTER-KEY message. With a CVSS score of 5.0, this vulnerability is of medium severity, requiring no authentication and having a low attack complexity, leading to a partial availability impact. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or inclusion in the KEV catalog, though it has received some community discussion and media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
<= 0.9.8zeCPE matchmatch criteria
cpe:2.3:a:openssl:openssl:*:*:*:*:*:*:*:*
1.0.0CPE matchmatch criteria
cpe:2.3:a:openssl:openssl:1.0.0:*:*:*:*:*:*:*
1.0.0aCPE matchmatch criteria
cpe:2.3:a:openssl:openssl:1.0.0a:*:*:*:*:*:*:*
1.0.0bCPE matchmatch criteria
cpe:2.3:a:openssl:openssl:1.0.0b:*:*:*:*:*:*:*
1.0.0cCPE matchmatch criteria
cpe:2.3:a:openssl:openssl:1.0.0c:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

5.0MEDIUM

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

Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
2.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
21.25%
Probability of exploitation in next 30 days
EPSS Percentile
97.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.2125 is in the 97th percentile among its peer group of 23,705 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.4 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (20)

redhatpatch availablevia redhat_api
Product: Red Hat JBoss Web Server 2.1Fixed in: openssl
View patch
redhatpatch availablevia redhat_api
Product: Red Hat JBoss Web Server 3.0
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 4 Extended Lifecycle SupportFixed in: openssl-0:0.9.7a-43.23.el4
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: openssl-0:0.9.8e-33.el5_11
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5.6 Long LifeFixed in: openssl-0:0.9.8e-12.el5_6.13
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5.9 Long LifeFixed in: openssl-0:0.9.8e-26.el5_9.5
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: openssl-0:1.0.1e-30.el6_6.7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: openssl098e-0:0.9.8e-20.el6_7.1
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6.2 Advanced Update SupportFixed in: openssl-0:1.0.0-20.el6_2.8
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6.4 Advanced Update SupportFixed in: openssl-0:1.0.0-27.el6_4.5
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6.5 Advanced Update SupportFixed in: openssl-0:1.0.1e-16.el6_5.16
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: openssl-1:1.0.1e-42.el7_1.4
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: openssl098e-0:0.9.8e-29.el7_2.3
View patch
redhatpatch availablevia redhat_api
Product: Red Hat JBoss Enterprise Application Platform 6.4Fixed in: openssl
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Storage 2.1Fixed in: openssl-0:1.0.1e-30.el6_6.7
View patch
redhatno patchvia redhat_api
Product: Red Hat JBoss Enterprise Web Server 3Fixed in: openssl
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: openssl097a
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Virtualization 3Fixed in: mingw-virt-viewer
redhatend of lifevia redhat_api
Product: Red Hat JBoss Enterprise Application Platform 5Fixed in: openssl
redhatend of lifevia redhat_api
Product: Red Hat JBoss Enterprise Web Server 1Fixed in: openssl

Vendor Advisories (1)

redhatCVE-2015-0293Moderate

openssl: assertion failure in SSLv2 servers

Mar 19, 2015

References

kb.juniper.net / InfoCenter/index
lists.apple.com / archives/security-announce/2015/Jun/msg00002.html
lists.fedoraproject.org / pipermail/package-announce/2015-March/152733.html
lists.fedoraproject.org / pipermail/package-announce/2015-March/152734.html
lists.fedoraproject.org / pipermail/package-announce/2015-March/152844.html
lists.fedoraproject.org / pipermail/package-announce/2015-May/156823.html
lists.fedoraproject.org / pipermail/package-announce/2015-May/157177.html
lists.opensuse.org / opensuse-security-announce/2015-03/msg00022.html
lists.opensuse.org / opensuse-security-announce/2015-03/msg00027.html
lists.opensuse.org / opensuse-security-announce/2016-03/msg00001.html
lists.opensuse.org / opensuse-security-announce/2016-03/msg00002.html
lists.opensuse.org / opensuse-security-announce/2016-03/msg00003.html
lists.opensuse.org / opensuse-security-announce/2016-03/msg00004.html
lists.opensuse.org / opensuse-security-announce/2016-03/msg00006.html
lists.opensuse.org / opensuse-security-announce/2016-03/msg00007.html
lists.opensuse.org / opensuse-security-announce/2016-03/msg00009.html
lists.opensuse.org / opensuse-security-announce/2016-03/msg00010.html
lists.opensuse.org / opensuse-security-announce/2016-03/msg00011.html
lists.opensuse.org / opensuse-security-announce/2016-03/msg00012.html
lists.opensuse.org / opensuse-security-announce/2016-03/msg00025.html
lists.opensuse.org / opensuse-security-announce/2016-04/msg00038.html
lists.opensuse.org / opensuse-updates/2015-03/msg00062.html
marc.info
marc.info
marc.info
marc.info
rhn.redhat.com / errata/RHSA-2015-0715.html
rhn.redhat.com / errata/RHSA-2015-0716.html
rhn.redhat.com / errata/RHSA-2015-0752.html
rhn.redhat.com / errata/RHSA-2015-0800.html
access.redhat.com / articles/1384453
bto.bluecoat.com / security-advisory/sa92
bugzilla.redhat.com / show_bug.cgi
cert-portal.siemens.com / productcert/pdf/ssa-412672.pdf
git.openssl.org
kc.mcafee.com / corporate/index
security.gentoo.org / glsa/201503-11
support.citrix.com / article/CTX216642
support.apple.com / kb/HT204942
freebsd.org / security/advisories/FreeBSD-SA-15%3A06.openssl.asc
openssl.org / news/secadv_20150319.txt
Vendor Advisory
mandriva.com / security/advisories
mandriva.com / security/advisories
oracle.com / technetwork/security-advisory/cpujan2018-3236628.html
oracle.com / technetwork/security-advisory/cpuoct2017-3236626.html
oracle.com / technetwork/topics/security/bulletinapr2015-2511959.html
oracle.com / technetwork/topics/security/bulletinjan2015-2370101.html
oracle.com / technetwork/topics/security/cpujan2016-2367955.html
oracle.com / technetwork/topics/security/cpujul2015-2367936.html
oracle.com / technetwork/topics/security/cpuoct2015-2367953.html
oracle.com / technetwork/topics/security/linuxbulletinjan2016-2867209.html
securityfocus.com / bid/73232
securitytracker.com / id/1031929
ubuntu.com / usn/USN-2537-1