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CVE-2009-3877

16
FAUCET Score

CVE-2009-3877 is an unspecified vulnerability in Sun Java SE (JDK and JRE versions 5.0, 6, 1.3.x, and 1.4.x) that allows remote attackers to cause a denial of service through excessive memory consumption. This occurs when crafted HTTP headers are improperly parsed by the ASN.1 DER input stream parser. The vulnerability has a CVSS score of 5.0, indicating a medium severity, with a network attack vector, low complexity, and potential for partial availability impact. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
1.5.0CPE matchmatch criteria
cpe:2.3:a:sun:jdk:1.5.0:update1:*:*:*:*:*:*
1.5.0CPE matchmatch criteria
cpe:2.3:a:sun:jdk:1.5.0:update10:*:*:*:*:*:*
1.5.0CPE matchmatch criteria
cpe:2.3:a:sun:jdk:1.5.0:update11:*:*:*:*:*:*
1.5.0CPE matchmatch criteria
cpe:2.3:a:sun:jdk:1.5.0:update11_b03:*:*:*:*:*:*
1.5.0CPE matchmatch criteria
cpe:2.3:a:sun:jdk:1.5.0:update12:*:*:*:*:*:*

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
4.81%
Probability of exploitation in next 30 days
EPSS Percentile
91.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0481 is in the 88th percentile among its peer group of 23,723 CVEs.

Social Chatter

No social media mentions found for this CVE.

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 (16)

redhatpatch availablevia redhat_api
Product: Extras for RHEL 3Fixed in: java-1.4.2-ibm-0:1.4.2.13.3-1jpp.1.el3
View patch
redhatpatch availablevia redhat_api
Product: Extras for RHEL 4Fixed in: java-1.6.0-sun-1:1.6.0.17-1jpp.1.el4
View patch
redhatpatch availablevia redhat_api
Product: Extras for RHEL 4Fixed in: java-1.5.0-sun-0:1.5.0.22-1jpp.1.el4
View patch
redhatpatch availablevia redhat_api
Product: Extras for RHEL 4Fixed in: java-1.4.2-ibm-0:1.4.2.13.3-1jpp.1.el4
View patch
redhatpatch availablevia redhat_api
Product: Extras for RHEL 4Fixed in: java-1.5.0-ibm-1:1.5.0.11-1jpp.1.el4
View patch
redhatpatch availablevia redhat_api
Product: Extras for RHEL 4Fixed in: java-1.6.0-ibm-1:1.6.0.7-1jpp.3.el4
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: java-1.6.0-openjdk-1:1.6.0.0-1.7.b09.el5
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Network Satellite Server v 5.1Fixed in: java-1.5.0-sun-0:1.5.0.22-1jpp.1.el4
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Network Satellite Server v 5.3Fixed in: java-1.6.0-ibm-1:1.6.0.7-1jpp.3.el4
View patch
redhatpatch availablevia redhat_api
Product: RHEL 4 for SAPFixed in: java-1.4.2-ibm-0:1.4.2.13.2.sap-1jpp.4.el4_8
View patch
redhatpatch availablevia redhat_api
Product: RHEL 5 for SAPFixed in: java-1.4.2-ibm-0:1.4.2.13.2.sap-1jpp.4.el5_3
View patch
redhatpatch availablevia redhat_api
Product: Supplementary for Red Hat Enterprise Linux 5Fixed in: java-1.6.0-sun-1:1.6.0.17-1jpp.2.el5
View patch
redhatpatch availablevia redhat_api
Product: Supplementary for Red Hat Enterprise Linux 5Fixed in: java-1.5.0-sun-0:1.5.0.22-1jpp.1.el5
View patch
redhatpatch availablevia redhat_api
Product: Supplementary for Red Hat Enterprise Linux 5Fixed in: java-1.4.2-ibm-0:1.4.2.13.3-1jpp.1.el5
View patch
redhatpatch availablevia redhat_api
Product: Supplementary for Red Hat Enterprise Linux 5Fixed in: java-1.5.0-ibm-1:1.5.0.11-1jpp.1.el5
View patch
redhatpatch availablevia redhat_api
Product: Supplementary for Red Hat Enterprise Linux 5Fixed in: java-1.6.0-ibm-1:1.6.0.7-1jpp.2.el5
View patch

Vendor Advisories (1)

redhatCVE-2009-3877Moderate

OpenJDK ASN.1/DER input stream parser denial of service (6864911) CVE-2009-3877

Nov 3, 2009

References

java.sun.com / javase/6/webnotes/6u17.html
Vendor Advisory
lists.apple.com / archives/security-announce/2009/Dec/msg00000.html
lists.apple.com / archives/security-announce/2009/Dec/msg00001.html
lists.opensuse.org / opensuse-security-announce/2009-11/msg00010.html
marc.info
marc.info
secunia.com / advisories/37231
Vendor Advisory
secunia.com / advisories/37239
secunia.com / advisories/37386
secunia.com / advisories/37581
secunia.com / advisories/37841
security.gentoo.org / glsa/glsa-200911-02.xml
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10469
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12232
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A7148
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A8330
sunsolve.sun.com / search/document.do
PatchVendor Advisory
support.apple.com / kb/HT3969
support.apple.com / kb/HT3970
mandriva.com / security/advisories
oracle.com / technetwork/topics/security/cpujan2010-084891.html
redhat.com / support/errata/RHSA-2009-1694.html
securityfocus.com / bid/36881
vupen.com / english/advisories/2009/3131
PatchVendor Advisory