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CVE-2016-2105· NVD / CVE Program· CNA redhat

Integer overflow in the EVP_EncodeUpdate function in crypto/evp/encode.c in OpenSSL before 1.0.1t and 1.0.2 before 1.0.2h allows remote atta

Integer overflow in the EVP_EncodeUpdate function in crypto/evp/encode.c in OpenSSL before 1.0.1t and 1.0.2 before 1.0.2h allows remote attackers to cause a denial of service (heap memory corruption) via a large amount of binary data.

HighCVSS 7.5 · v3.1—No exploit Fix available
Published
May 4, 2016
Updated
Jun 16, 2026
EPSS
39.7% · 99th percentile
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Report tools

JSON

Action score

42

Plan

Add it to your regular patch cycle.

CVSS
30 / 40 · 7.5 / 10
CISA KEV
0 / 30 · Not listed
EPSS
12 / 30 · 39.7%

Affected systems

VendorProduct
opensslopenssl
redhatenterprise linux desktop
redhatenterprise linux hpc node
redhatenterprise linux server
redhatenterprise linux workstation
opensuseleap
opensuseopensuse
oraclemysql
redhatenterprise linux hpc node eus
redhatenterprise linux server aus
redhatenterprise linux server eus
applemac os x

and 3 more

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • nodejs node.js4.2.0 and later · before 4.4.4
  • nodejs node.js5.0.0 and later · before 5.11.1
  • nodejs node.js0.10.0 and later · before 0.10.45
  • nodejs node.js0.12.0 and later · before 0.12.14
  • nodejs node.js4.0.0 and later · up to 4.1.2 inclusive
  • nodejs node.js6.0.0
  • oracle mysql5.7.0 and later · up to 5.7.12 inclusive
  • oracle mysql5.6.0 and later · up to 5.6.30 inclusive

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Alpine:v3.2opensslbefore 1.0.2h-r01.0.2h-r0
Debian:12opensslbefore 1.0.2h-11.0.2h-1
Debian:7opensslbefore 1.0.1e-2+deb7u211.0.1e-2+deb7u21
Debian:8opensslbefore 1.0.1k-3+deb8u51.0.1k-3+deb8u5
Red Hat:enterprise_linux:6::clientopensslbefore 0:1.0.1e-48.el6_8.10:1.0.1e-48.el6_8.1
Red Hat:enterprise_linux:6::clientopenssl-debuginfobefore 0:1.0.1e-48.el6_8.10:1.0.1e-48.el6_8.1
Red Hat:enterprise_linux:6::clientopenssl-develbefore 0:1.0.1e-48.el6_8.10:1.0.1e-48.el6_8.1
Red Hat:enterprise_linux:6::clientopenssl-perlbefore 0:1.0.1e-48.el6_8.10:1.0.1e-48.el6_8.1
Red Hat:enterprise_linux:6::clientopenssl-staticbefore 0:1.0.1e-48.el6_8.10:1.0.1e-48.el6_8.1
Red Hat:enterprise_linux:7::clientopensslbefore 1:1.0.1e-51.el7_2.51:1.0.1e-51.el7_2.5
Red Hat:enterprise_linux:7::clientopenssl-debuginfobefore 1:1.0.1e-51.el7_2.51:1.0.1e-51.el7_2.5
Red Hat:enterprise_linux:7::clientopenssl-develbefore 1:1.0.1e-51.el7_2.51:1.0.1e-51.el7_2.5
Red Hat:enterprise_linux:7::clientopenssl-libsbefore 1:1.0.1e-51.el7_2.51:1.0.1e-51.el7_2.5
Red Hat:enterprise_linux:7::clientopenssl-perlbefore 1:1.0.1e-51.el7_2.51:1.0.1e-51.el7_2.5
Red Hat:enterprise_linux:7::clientopenssl-staticbefore 1:1.0.1e-51.el7_2.51:1.0.1e-51.el7_2.5
Red Hat:jboss_enterprise_web_server:2::el6httpdbefore 0:2.2.26-54.ep6.el60:2.2.26-54.ep6.el6
Red Hat:jboss_enterprise_web_server:2::el6httpd-debuginfobefore 0:2.2.26-54.ep6.el60:2.2.26-54.ep6.el6
Red Hat:jboss_enterprise_web_server:2::el6httpd-develbefore 0:2.2.26-54.ep6.el60:2.2.26-54.ep6.el6
Red Hat:jboss_enterprise_web_server:2::el6httpd-manualbefore 0:2.2.26-54.ep6.el60:2.2.26-54.ep6.el6
Red Hat:jboss_enterprise_web_server:2::el6httpd-toolsbefore 0:2.2.26-54.ep6.el60:2.2.26-54.ep6.el6
Red Hat:jboss_enterprise_web_server:2::el6jbcs-httpd24before 0:1-3.jbcs.el60:1-3.jbcs.el6
Red Hat:jboss_enterprise_web_server:2::el6jbcs-httpd24-opensslbefore 1:1.0.2h-4.jbcs.el61:1.0.2h-4.jbcs.el6
Red Hat:jboss_enterprise_web_server:2::el6jbcs-httpd24-openssl-debuginfobefore 1:1.0.2h-4.jbcs.el61:1.0.2h-4.jbcs.el6
Red Hat:jboss_enterprise_web_server:2::el6jbcs-httpd24-openssl-develbefore 1:1.0.2h-4.jbcs.el61:1.0.2h-4.jbcs.el6

+52

Other highest-scoring records for the same primary product.

  • CVE-2014-0160The (1) TLS and (2) DTLS implementations in OpenSSL 1.0.1 before 1.0.1g do not properly handle Heartbeat Extension packets, which allows remKEV
    90Now
  • CVE-2021-3711SM2 Decryption Buffer Overflow
    65This week
  • CVE-2003-0545Double free vulnerability in OpenSSL 0.9.7 allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code
    65This week
  • CVE-2016-2108The ASN.1 implementation in OpenSSL before 1.0.1o and 1.0.2 before 1.0.2c allows remote attackers to execute arbitrary code or cause a denia
    62This week
  • CVE-2016-6309statem/statem.c in OpenSSL 1.1.0a does not consider memory-block movement after a realloc call, which allows remote attackers to cause a den
    60This week
  • CVE-2022-3786X.509 Email Address Variable Length Buffer Overflow
    58Plan

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
alpine:openssl1.0.2h-r0 · Alpine:v3.2Package registry (OSV)
debian:openssl1.0.2h-1 · Debian:12Package registry (OSV)
red hat:httpd220:2.2.26-56.ep6.el7 · Red Hat:jboss_enterprise_web_server:2::el7Package registry (OSV)
red hat:httpd22-debuginfo0:2.2.26-56.ep6.el7 · Red Hat:jboss_enterprise_web_server:2::el7Package registry (OSV)
red hat:httpd22-devel0:2.2.26-56.ep6.el7 · Red Hat:jboss_enterprise_web_server:2::el7Package registry (OSV)
red hat:httpd22-manual0:2.2.26-56.ep6.el7 · Red Hat:jboss_enterprise_web_server:2::el7Package registry (OSV)
red hat:httpd22-tools0:2.2.26-56.ep6.el7 · Red Hat:jboss_enterprise_web_server:2::el7Package registry (OSV)
red hat:jbcs-httpd240:1-3.jbcs.el7 · Red Hat:jboss_enterprise_web_server:2::el7Package registry (OSV)
red hat:openssl1:1.0.1e-51.el7_2.5 · Red Hat:enterprise_linux:7::clientPackage registry (OSV)
red hat:openssl-debuginfo1:1.0.1e-51.el7_2.5 · Red Hat:enterprise_linux:7::clientPackage registry (OSV)
red hat:openssl-devel1:1.0.1e-51.el7_2.5 · Red Hat:enterprise_linux:7::clientPackage registry (OSV)
red hat:openssl-libs1:1.0.1e-51.el7_2.5 · Red Hat:enterprise_linux:7::clientPackage registry (OSV)
red hat:openssl-perl1:1.0.1e-51.el7_2.5 · Red Hat:enterprise_linux:7::clientPackage registry (OSV)
red hat:openssl-static1:1.0.1e-51.el7_2.5 · Red Hat:enterprise_linux:7::clientPackage registry (OSV)
suse:compat-openssl097g0.9.7g-146.22.44.1 · SUSE:Linux Enterprise Server for SAP Applications 11 SP3Package registry (OSV)
suse:compat-openssl0980.9.8j-97.1 · SUSE:Linux Enterprise Desktop 12Package registry (OSV)
suse:openssl1.0.1i-27.16.1 · SUSE:Linux Enterprise Desktop 12Package registry (OSV)
suse:openssl11.0.1g-0.47.1 · SUSE:Linux Enterprise Server 11-SECURITYPackage registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • No account or password is required.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
none
Integrity
none
Availability
high · the service can be disrupted
Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality impact
None
Integrity impact
None
Availability impact
High

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

ATT&CK techniques

—

Noroxi analysis

No Noroxi analysis for this record yet

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Change log

  1. Fix✗ → ✓

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References

All records