HIGH
nss: Heap buffer overflow vulnerability in ASN1 certificate parsing (MFSA 2016-35)
Published Mar 13, 2016
8.8
HIGHCVSS 3.0
EPSS 4.19%
Description
Heap-based buffer overflow in Mozilla Network Security Services (NSS) before 3.19.2.3 and 3.20.x and 3.21.x before 3.21.1, as used in Mozilla Firefox before 45.0 and Firefox ESR 38.x before 38.7, allows remote attackers to execute arbitrary code via crafted ASN.1 data in an X.509 certificate.
Affected products
No data.
Configuration 1
AND
OR
- 3.19.2
- 3.20
- 3.20.1
- 3.21
OR
- ≤ 44.0.2
- 38.0
- 38.0.1
- 38.0.5
- 38.1.0
- 38.1.1
- 38.2.0
- 38.2.1
- 38.3.0
- 38.4.0
- 38.5.0
- 38.5.1
- 38.6.0
- 38.6.1
Configuration 2
Configuration 3
Configuration 4
OR
- 2.1.1
- 4.0
- 7.0
No data.
Red Hat Enterprise Linux 5
nss-0:3.19.1-4.el5_11
Fixed · RHSA-2016:0371
Red Hat Enterprise Linux 6
nss-util-0:3.19.1-5.el6_7
Fixed · RHSA-2016:0370
Red Hat Enterprise Linux 6.2 Advanced Update Support
nss-util-0:3.13.1-10.el6_2
Fixed · RHSA-2016:0495
Red Hat Enterprise Linux 6.4 Advanced Update Support
nss-util-0:3.14.3-8.el6_4
Fixed · RHSA-2016:0495
Red Hat Enterprise Linux 6.5 Advanced Update Support
nss-util-0:3.16.1-4.el6_5
Fixed · RHSA-2016:0495
Red Hat Enterprise Linux 6.6 Extended Update Support
nss-util-0:3.19.1-3.el6_6
Fixed · RHSA-2016:0495
Red Hat Enterprise Linux 7
nss-util-0:3.19.1-9.el7_2
Fixed · RHSA-2016:0370
Red Hat Enterprise Linux 7.1 Extended Update Support
nss-util-0:3.19.1-5.ael7b_1
Fixed · RHSA-2016:0495
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 5 | nss-0:3.19.1-4.el5_11 | Fixed | RHSA-2016:0371 |
| Red Hat Enterprise Linux 6 | nss-util-0:3.19.1-5.el6_7 | Fixed | RHSA-2016:0370 |
| Red Hat Enterprise Linux 6.2 Advanced Update Support | nss-util-0:3.13.1-10.el6_2 | Fixed | RHSA-2016:0495 |
| Red Hat Enterprise Linux 6.4 Advanced Update Support | nss-util-0:3.14.3-8.el6_4 | Fixed | RHSA-2016:0495 |
| Red Hat Enterprise Linux 6.5 Advanced Update Support | nss-util-0:3.16.1-4.el6_5 | Fixed | RHSA-2016:0495 |
| Red Hat Enterprise Linux 6.6 Extended Update Support | nss-util-0:3.19.1-3.el6_6 | Fixed | RHSA-2016:0495 |
| Red Hat Enterprise Linux 7 | nss-util-0:3.19.1-9.el7_2 | Fixed | RHSA-2016:0370 |
| Red Hat Enterprise Linux 7.1 Extended Update Support | nss-util-0:3.19.1-5.ael7b_1 | Fixed | RHSA-2016:0495 |
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
8.8 HIGH NVD
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction Required
Scope Unchanged
Confidentiality Impact High
Integrity Impact High
Availability Impact High
6.8 MEDIUM NVD
AV:N/AC:M/Au:N/C:P/I:P/A:P
Access Vector Network
Access Complexity Medium
Authentication None
Confidentiality Impact Partial
Integrity Impact Partial
Availability Impact Partial
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
4.19% 0.04192
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
EPSS probability 0.04192
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (30 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 4.19% (0.04192) | 90.63th | v5 (v2026.06.15) |
| Sep 22, 2026 | 4.19% (0.04192) | 90.49th | v5 (v2026.06.15) |
| Sep 21, 2026 | 6.01% (0.06011) | 93.08th | v5 (v2026.06.15) |
| Sep 6, 2026 | 4.19% (0.04192) | 90.27th | v5 (v2026.06.15) |
| Sep 5, 2026 | 6.01% (0.06011) | 92.92th | v5 (v2026.06.15) |
| Aug 30, 2026 | 4.19% (0.04192) | 90.22th | v5 (v2026.06.15) |
| Aug 28, 2026 | 6.01% (0.06011) | 92.88th | v5 (v2026.06.15) |
| Aug 24, 2026 | 4.19% (0.04192) | 90.16th | v5 (v2026.06.15) |
| Aug 23, 2026 | 6.01% (0.06011) | 92.85th | v5 (v2026.06.15) |
| Jun 15, 2026 | 4.19% (0.04192) | 89.61th | v5 (v2026.06.15) |
| Jan 19, 2026 | 1.87% (0.01867) | 82.63th | v4 (v2025.03.14) |
| Dec 28, 2025 | 3.33% (0.03325) | 86.90th | v4 (v2025.03.14) |
| Dec 27, 2025 | 1.94% (0.01938) | 83.02th | v4 (v2025.03.14) |
| Nov 12, 2025 | 4.04% (0.04035) | 87.99th | v4 (v2025.03.14) |
| Oct 28, 2025 | 3.01% (0.03012) | 86.09th | v4 (v2025.03.14) |
| Oct 27, 2025 | 1.75% (0.01752) | 81.95th | v4 (v2025.03.14) |
| Oct 1, 2025 | 3.01% (0.03012) | 86.15th | v4 (v2025.03.14) |
| Jul 30, 2025 | 1.75% (0.01752) | 81.78th | v4 (v2025.03.14) |
| Mar 30, 2025 | 3.01% (0.03013) | 85.40th | v4 (v2025.03.14) |
| Mar 29, 2025 | 10.22% (0.10224) | 88.48th | v4 (v2025.03.14) |
| Mar 17, 2025 | 3.01% (0.03013) | 85.70th | v4 (v2025.03.14) |
| Dec 12, 2024 | 1.38% (0.01380) | 86.87th | v3 (v2023.03.01) |
| Apr 12, 2024 | 1.01% (0.01006) | 83.43th | v3 (v2023.03.01) |
| Jan 4, 2024 | 0.98% (0.00983) | 81.78th | v3 (v2023.03.01) |
| Oct 30, 2023 | 0.76% (0.00760) | 79.07th | v3 (v2023.03.01) |
| Sep 26, 2023 | 0.59% (0.00587) | 75.63th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.54% (0.00544) | 73.86th | v3 (v2023.03.01) |
| Mar 6, 2023 | 6.06% (0.06056) | 90.58th | v2 (v2022.01.01) |
| Apr 1, 2022 | 6.06% (0.06056) | 89.70th | v2 (v2022.01.01) |
| Feb 4, 2022 | 6.06% (0.06056) | 77.54th | v2 (v2022.01.01) |
Weaknesses (1)
References (42)
- http://lists.apple.com/archives/security-announce/2016/Mar/msg00000.html vendor-advisoryx_refsource_APPLEMailing List
- http://lists.apple.com/archives/security-announce/2016/Mar/msg00001.html vendor-advisoryx_refsource_APPLEMailing List
- http://lists.apple.com/archives/security-announce/2016/Mar/msg00002.html vendor-advisoryx_refsource_APPLEMailing List
- http://lists.apple.com/archives/security-announce/2016/Mar/msg00004.html vendor-advisoryx_refsource_APPLEMailing List
- http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00027.html vendor-advisoryx_refsource_SUSE
- http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00029.html vendor-advisoryx_refsource_SUSE
- http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00031.html vendor-advisoryx_refsource_SUSE
- http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00050.html vendor-advisoryx_refsource_SUSE
- http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00068.html vendor-advisoryx_refsource_SUSE
- http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00093.html vendor-advisoryx_refsource_SUSE
- http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00016.html vendor-advisoryx_refsource_SUSEThird Party Advisory
- http://rhn.redhat.com/errata/RHSA-2016-0495.html vendor-advisoryx_refsource_REDHAT
- http://www.debian.org/security/2016/dsa-3510 vendor-advisoryx_refsource_DEBIAN
- http://www.debian.org/security/2016/dsa-3520 vendor-advisoryx_refsource_DEBIAN
- http://www.debian.org/security/2016/dsa-3688 vendor-advisoryx_refsource_DEBIAN
- http://www.mozilla.org/security/announce/2016/mfsa2016-35.html x_refsource_CONFIRMVendor Advisory
- http://www.oracle.com/technetwork/security-advisory/cpujul2017-3236622.html x_refsource_CONFIRM
- http://www.oracle.com/technetwork/security-advisory/cpuoct2016-2881722.html x_refsource_CONFIRMThird Party Advisory
- http://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.html x_refsource_CONFIRM
- http://www.oracle.com/technetwork/topics/security/linuxbulletinjan2016-2867209.html x_refsource_CONFIRMThird Party Advisory
- http://www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.html x_refsource_CONFIRMThird Party Advisory
- http://www.securityfocus.com/bid/84223 vdb-entryx_refsource_BID
- http://www.securitytracker.com/id/1035215 vdb-entryx_refsource_SECTRACK
- http://www.ubuntu.com/usn/USN-2917-1 vendor-advisoryx_refsource_UBUNTU
- http://www.ubuntu.com/usn/USN-2917-2 vendor-advisoryx_refsource_UBUNTU
- http://www.ubuntu.com/usn/USN-2917-3 vendor-advisoryx_refsource_UBUNTU
- http://www.ubuntu.com/usn/USN-2924-1 vendor-advisoryx_refsource_UBUNTU
- http://www.ubuntu.com/usn/USN-2934-1 vendor-advisoryx_refsource_UBUNTU
- https://access.redhat.com/security/cve/CVE-2016-1950 Vendor Advisory
- https://bto.bluecoat.com/security-advisory/sa119 x_refsource_CONFIRM
- https://bugzilla.mozilla.org/show_bug.cgi?id=1245528 x_refsource_CONFIRMIssue Tracking
- https://bugzilla.redhat.com/show_bug.cgi?id=1310509 Issue Tracking
- https://developer.mozilla.org/en-US/docs/Mozilla/Projects/NSS/NSS_3.19.2.3_release_notes x_refsource_CONFIRMRelease Notes
- https://developer.mozilla.org/en-US/docs/Mozilla/Projects/NSS/NSS_3.21.1_release_notes x_refsource_CONFIRMRelease Notes
- https://nvd.nist.gov/vuln/detail/CVE-2016-1950
- https://security.gentoo.org/glsa/201605-06 vendor-advisoryx_refsource_GENTOO
- https://support.apple.com/HT206166 x_refsource_CONFIRMThird Party Advisory
- https://support.apple.com/HT206167 x_refsource_CONFIRMThird Party Advisory
- https://support.apple.com/HT206168 x_refsource_CONFIRMThird Party Advisory
- https://support.apple.com/HT206169 x_refsource_CONFIRMThird Party Advisory
- https://www.cve.org/CVERecord?id=CVE-2016-1950
- https://www.mozilla.org/en-US/security/advisories/mfsa2016-35
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner mozilla
Published Mar 13, 2016
Updated Aug 5, 2024
Reserved Jan 20, 2016
Link CVE-2016-1950
CISA Vulnrichment
Updated n/a