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CVE-2012-0884

25
FAUCET Score

CVE-2012-0884 describes a cryptographic vulnerability in OpenSSL versions prior to 0.9.8u and 1.0.0h, specifically within its Cryptographic Message Syntax (CMS) and PKCS #7 implementations. This flaw allows attackers to decrypt data using a Million Message Attack (MMA) adaptive chosen ciphertext attack due to improper restriction of oracle behavior. Rated with a CVSS score of 5.0, this vulnerability has a network attack vector and low attack complexity, potentially leading to information disclosure. There is no evidence of active exploitation, publicly available exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 0.9.8tCPE matchmatch criteria
cpe:2.3:a:openssl:openssl:*:*:*:*:*:*:*:*
0.9.0bCPE matchmatch criteria
cpe:2.3:a:openssl:openssl:0.9.0b:*:*:*:*:*:*:*
0.9.1bCPE matchmatch criteria
cpe:2.3:a:openssl:openssl:0.9.1b:*:*:*:*:*:*:*
0.9.1cCPE matchmatch criteria
cpe:2.3:a:openssl:openssl:0.9.1c:*:*:*:*:*:*:*
0.9.2bCPE matchmatch criteria
cpe:2.3:a:openssl:openssl:0.9.2b:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

5.0MEDIUM

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

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

Exploit Intelligence

EPSS Score
12.93%
Probability of exploitation in next 30 days
EPSS Percentile
95.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.1293 is in the 95th percentile among its peer group of 23,684 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

No media coverage found for this CVE.

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 (10)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: openssl-0:0.9.8e-22.el5_8.1
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: openssl-0:1.0.0-20.el6_2.3
View patch
redhatpatch availablevia redhat_api
Product: Red Hat JBoss Enterprise Application Platform 5.1
View patch
redhatpatch availablevia redhat_api
Product: Red Hat JBoss Enterprise Application Platform 6.0
View patch
redhatpatch availablevia redhat_api
Product: Red Hat JBoss Web Server 1.0
View patch
redhatno patchvia redhat_api
Product: Red Hat JBoss Enterprise Web Server 1Fixed in: openssl
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 4Fixed in: openssl096b
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: openssl097a
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: openssl098e
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 4Fixed in: openssl

Vendor Advisories (1)

redhatCVE-2012-0884Low

openssl: CMS and PKCS#7 Bleichenbacher attack

Mar 12, 2012

References

lists.fedoraproject.org / pipermail/package-announce/2012-April/077086.html
lists.fedoraproject.org / pipermail/package-announce/2012-April/077221.html
lists.fedoraproject.org / pipermail/package-announce/2012-April/077666.html
lists.fedoraproject.org / pipermail/package-announce/2012-November/092905.html
marc.info
marc.info
marc.info
rhn.redhat.com / errata/RHSA-2012-0426.html
rhn.redhat.com / errata/RHSA-2012-0488.html
rhn.redhat.com / errata/RHSA-2012-0531.html
rhn.redhat.com / errata/RHSA-2012-1306.html
rhn.redhat.com / errata/RHSA-2012-1307.html
rhn.redhat.com / errata/RHSA-2012-1308.html
downloads.avaya.com / css/P8/documents/100162507
secunia.com / advisories/48580
secunia.com / advisories/48895
secunia.com / advisories/48916
secunia.com / advisories/57353
hermes.opensuse.org / messages/14330767
www-01.ibm.com / support/docview.wss
debian.org / security/2012/dsa-2454
kb.cert.org / vuls/id/737740
US Government Resource
openssl.org / news/secadv_20120312.txt
Vendor Advisory