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CVE-2015-3406

20
FAUCET Score

CVE-2015-3406 describes a vulnerability in the PGP signature parsing of Module::Signature versions prior to 0.74, affecting products like Canonical's module-signature and Ubuntu Linux. This flaw allows remote attackers to manipulate SIGNATURE files, causing unsigned portions to be misinterpreted as signed. With a CVSS score of 7.5 (High), the vulnerability presents a low-complexity attack vector that can lead to high integrity impact without requiring user interaction. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 0.74CPE matchmatch criteria
cpe:2.3:a:module-signature_project:module-signature:*:*:*:*:*:*:*:*
12.04CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:lts:*:*:*
14.04CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*
14.10CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:14.10:*:*:*:*:*:*:*
15.04CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:15.04:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
2.29%
Probability of exploitation in next 30 days
EPSS Percentile
81.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0229 is in the 67th percentile among its peer group of 51,485 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, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (3)

github_advisorypatch availablevia nvd_reference
View patch
ubuntupatch availablevia nvd_reference
View patch
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: perl-Module-Signature

Vendor Advisories (1)

redhatCVE-2015-3406Moderate

perl-Module-Signature: unsigned files interpreted as signed in some circumstances

Apr 5, 2015

References

github.com / audreyt/module-signature/commit/8a9164596fa5952d4fbcde5aa1c7d1c7bc85372f
PatchThird Party Advisory
metacpan.org / changes/distribution/Module-Signature
Release NotesVendor Advisory
ubuntu.com / usn/usn-2607-1
PatchRelease NotesThird Party Advisory
openwall.com / lists/oss-security/2015/04/07/1
Mailing ListPatchThird Party Advisory
openwall.com / lists/oss-security/2015/04/23/17
Mailing ListPatchThird Party Advisory