CVE-2016-6303 — Out-of-bounds Write in Openssl

CWE-787 — Out-of-bounds WriteCWE-119 — Improper Restriction of Operations within the Bounds of a Memory BufferCWE-310CWE-635CWE-190 — Integer Overflow or Wraparound15 documents12 sources
Severity
9.8CRITICALNVD
EPSS
28.8%
top 3.44%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
2
OpensslNodejs Node.js
Timeline
PublishedSep 16
Latest updateMay 14

Description

Integer overflow in the MDC2_Update function in crypto/mdc2/mdc2dgst.c in OpenSSL before 1.1.0 allows remote attackers to cause a denial of service (out-of-bounds write and application crash) or possibly have unspecified other impact via unknown vectors.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HExploitability: 3.9 | Impact: 5.9

Affected Packages3 packages

▶Debianopenssl/openssl< 1.0.2i-1+3
▶NVDopenssl/openssl30 versions+29
▶NVDnodejs/node.js4.0.0 — 4.6.0+2

Patches

Patch: www.oracle.com ↗Patch: www.oracle.com ↗Patch: www.oracle.com ↗

🔴Vulnerability Details

3
GHSA
GHSA-w6xc-jcff-g3vg: Integer overflow in the MDC2_Update function in crypto/mdc2/mdc2dgst↗2022-05-14
▶
OSV
CVE-2016-6303: Integer overflow in the MDC2_Update function in crypto/mdc2/mdc2dgst↗2016-09-16
▶
CVEList
CVE-2016-6303: Integer overflow in the MDC2_Update function in crypto/mdc2/mdc2dgst↗2016-09-16
▶

📋Vendor Advisories

6
Apple
CVE-2016-6303: macOS Sierra 10.12.2, Security Update 2016-003 El Capitan, and Security Update 2016-007 Yosemite↗2016-12-13
▶
Cisco
Multiple Vulnerabilities in OpenSSL Affecting Cisco Products: September 2016↗2016-09-27
▶
BSD
FreeBSD-SA-16:26.openssl: Multiple OpenSSL vulnerabilities↗2016-09-23
▶
Ubuntu
OpenSSL vulnerabilities↗2016-09-22
▶
Red Hat
openssl: Integer overflow in MDC2_Update()↗2016-08-20
▶

💬Community

5
HackerOne
OOB write in MDC2_Update() (CVE-2016-6303)↗2017-05-25
▶
Bugzilla
CVE-2016-6303 openssl: Integer overflow in MDC2_Update() [fedora-all]↗2016-08-25
▶
Bugzilla
CVE-2016-6303 openssl: Integer overflow in MDC2_Update()↗2016-08-25
▶
Bugzilla
CVE-2016-6303 mingw-openssl: openssl: Integer overflow in MDC2_Update() [fedora-all]↗2016-08-25
▶
Bugzilla
CVE-2016-6303 openssl101e: openssl: Integer overflow in MDC2_Update() [epel-5]↗2016-08-25
▶
CVE-2016-6303 — Out-of-bounds Write in Openssl | cvebase