HOMEVULNERABILITIESCVE-2009-3875
MEDIUM

CVE-2009-3875

CWE-310Published: November 5, 2009· Updated: Jun 16, 2026

5.0
CVSS v3.1

Official Description

The MessageDigest.isEqual function in Java Runtime Environment (JRE) in Sun Java SE in JDK and JRE 5.0 before Update 22, JDK and JRE 6 before Update 17, SDK and JRE 1.3.x before 1.3.1_27, and SDK and JRE 1.4.x before 1.4.2_24 allows remote attackers to spoof HMAC-based digital signatures, and possibly bypass authentication, via unspecified vectors related to "timing attack vulnerabilities," aka Bug Id 6863503.

NVD Source

Technical Analysis

CVE-2009-3875 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires some privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.
User Interaction
Scope
Impact
ConfidentialityNone
IntegrityP
AvailabilityNone
AV:N/AC:L/Au:N/C:N/I:P/A:N

Affected Vendors & Products

Linux1 product(s)
linux kernel
Microsoft1 product(s)
windows
sun4 product(s)
jdkjresdksolaris
Source: NVD CPE · 139 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

PATCHhttp://sunsolve.sun.com/search/document.do?assetkey=1-66-270475-1
PATCHhttp://sunsolve.sun.com/search/document.do?assetkey=1-66-270475-1
ADVISORYhttp://secunia.com/advisories/37231
ADVISORYhttp://www.vupen.com/english/advisories/2009/3131
ADVISORYhttp://secunia.com/advisories/37231
ADVISORYhttp://www.vupen.com/english/advisories/2009/3131

All References (50)

→
http://java.sun.com/javase/6/webnotes/6u17.html
→
http://lists.apple.com/archives/security-announce/2009/Dec/msg00000.html
→
http://lists.apple.com/archives/security-announce/2009/Dec/msg00001.html
→
http://lists.opensuse.org/opensuse-security-announce/2009-11/msg00010.html
→
http://marc.info/?l=bugtraq&m=126566824131534&w=2
→
http://marc.info/?l=bugtraq&m=131593453929393&w=2
→
http://marc.info/?l=bugtraq&m=134254866602253&w=2
→
http://secunia.com/advisories/37231Vendor Advisory
→
http://secunia.com/advisories/37239
→
http://secunia.com/advisories/37386
→
http://secunia.com/advisories/37581
→
http://secunia.com/advisories/37841
→
http://security.gentoo.org/glsa/glsa-200911-02.xml
→
http://sunsolve.sun.com/search/document.do?assetkey=1-66-270475-1Patch · Vendor Advisory
→
http://support.apple.com/kb/HT3969

Quick Facts

CVE IDCVE-2009-3875
CVSS Score5.0 / 10
SeverityMEDIUM
WeaknessCWE-310
CISA KEVNo
Affected3 vendor(s)
PublishedNov 5, 2009

Related CVEs (CWE-310)

CVE-2010-2468
10.0
CVE-2012-2405
10.0
CVE-2008-7023
10.0
CVE-2007-6521
10.0
CVE-2010-2978
10.0
CVE-2013-6838
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2009-3875 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWatch. CVE data is provided under the NVD usage policy.
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