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CVE-2013-5607

27
FAUCET Score

CVE-2013-5607 describes an integer overflow vulnerability in the PL_ArenaAllocate function of Mozilla Netscape Portable Runtime (NSPR) versions prior to 4.10.2, affecting Firefox, Firefox ESR, and SeaMonkey. This flaw, triggered by a crafted X.509 certificate, could lead to a denial of service (application crash) and potentially other unspecified impacts. With a CVSS score of 7.5, it is considered highly severe, allowing unauthenticated remote attackers to exploit it with low complexity. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
<= 4.10.1CPE matchmatch criteria
cpe:2.3:a:mozilla:netscape_portable_runtime:*:*:*:*:*:*:*:*
4.1.1CPE matchmatch criteria
cpe:2.3:a:mozilla:netscape_portable_runtime:4.1.1:*:*:*:*:*:*:*
4.1.2CPE matchmatch criteria
cpe:2.3:a:mozilla:netscape_portable_runtime:4.1.2:*:*:*:*:*:*:*
4.2CPE matchmatch criteria
cpe:2.3:a:mozilla:netscape_portable_runtime:4.2:*:*:*:*:*:*:*
4.2.2CPE matchmatch criteria
cpe:2.3:a:mozilla:netscape_portable_runtime:4.2.2:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

7.5HIGH

AV:N/AC:L/Au:N/C:P/I:P/A:P

Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
6.4
CvssVersion
2.0

Exploit Intelligence

EPSS Score
3.04%
Probability of exploitation in next 30 days
EPSS Percentile
86.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0305 is in the 75th percentile among its peer group of 51,485 CVEs.

Social Chatter

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 (6)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: nspr-0:4.10.2-2.el5_10
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: nss-0:3.15.3-3.el5_10
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: nspr-0:4.10.2-1.el6_5
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: nss-0:3.15.3-2.el6_5
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: nss-util-0:3.15.3-1.el6_5
View patch
mozillavendor investigatingvia nvd_reference
View patch

Vendor Advisories (1)

redhatCVE-2013-5607Moderate

nspr: Avoid unsigned integer wrapping in PL_ArenaAllocate (MFSA 2013-103)

Nov 19, 2013

References

kb.juniper.net / InfoCenter/index
lists.opensuse.org / opensuse-security-announce/2013-12/msg00000.html
lists.opensuse.org / opensuse-updates/2013-11/msg00080.html
rhn.redhat.com / errata/RHSA-2013-1791.html
rhn.redhat.com / errata/RHSA-2013-1829.html
bugzilla.mozilla.org / show_bug.cgi
security.gentoo.org / glsa/glsa-201406-19.xml
groups.google.com / forum/message/raw
security.gentoo.org / glsa/201504-01
debian.org / security/2013/dsa-2820
mozilla.org / security/announce/2013/mfsa2013-103.html
Vendor Advisory
oracle.com / technetwork/topics/security/ovmbulletinjul2016-3090546.html
securityfocus.com / bid/63802
ubuntu.com / usn/USN-2031-1
ubuntu.com / usn/USN-2032-1
ubuntu.com / usn/USN-2087-1