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Vulnerability details: VCID-pdjz-q1vh-aaab
Vulnerability ID VCID-pdjz-q1vh-aaab
Aliases CVE-2015-2721
Summary Mozilla Network Security Services (NSS) before 3.19, as used in Mozilla Firefox before 39.0, Firefox ESR 31.x before 31.8 and 38.x before 38.1, Thunderbird before 38.1, and other products, does not properly determine state transitions for the TLS state machine, which allows man-in-the-middle attackers to defeat cryptographic protection mechanisms by blocking messages, as demonstrated by removing a forward-secrecy property by blocking a ServerKeyExchange message, aka a "SMACK SKIP-TLS" issue.
Status Published
Exploitability 0.5
Weighted Severity 7.0
Risk 3.5
Affected and Fixed Packages Package Details
Weaknesses (2)
CWE-310 Cryptographic Issues
CWE-358 Improperly Implemented Security Check for Standard
System Score Found at
generic_textual Medium http://people.canonical.com/~ubuntu-security/cve/2015/CVE-2015-2721.html
rhas Moderate https://access.redhat.com/errata/RHSA-2015:1185
rhas Moderate https://access.redhat.com/errata/RHSA-2015:1664
epss 0.00090 https://api.first.org/data/v1/epss?cve=CVE-2015-2721
epss 0.00090 https://api.first.org/data/v1/epss?cve=CVE-2015-2721
epss 0.00090 https://api.first.org/data/v1/epss?cve=CVE-2015-2721
epss 0.00090 https://api.first.org/data/v1/epss?cve=CVE-2015-2721
epss 0.00137 https://api.first.org/data/v1/epss?cve=CVE-2015-2721
epss 0.00137 https://api.first.org/data/v1/epss?cve=CVE-2015-2721
epss 0.00137 https://api.first.org/data/v1/epss?cve=CVE-2015-2721
epss 0.00137 https://api.first.org/data/v1/epss?cve=CVE-2015-2721
epss 0.00137 https://api.first.org/data/v1/epss?cve=CVE-2015-2721
epss 0.00137 https://api.first.org/data/v1/epss?cve=CVE-2015-2721
epss 0.00137 https://api.first.org/data/v1/epss?cve=CVE-2015-2721
epss 0.00137 https://api.first.org/data/v1/epss?cve=CVE-2015-2721
epss 0.00137 https://api.first.org/data/v1/epss?cve=CVE-2015-2721
epss 0.00137 https://api.first.org/data/v1/epss?cve=CVE-2015-2721
epss 0.00137 https://api.first.org/data/v1/epss?cve=CVE-2015-2721
epss 0.00137 https://api.first.org/data/v1/epss?cve=CVE-2015-2721
epss 0.009 https://api.first.org/data/v1/epss?cve=CVE-2015-2721
epss 0.009 https://api.first.org/data/v1/epss?cve=CVE-2015-2721
epss 0.009 https://api.first.org/data/v1/epss?cve=CVE-2015-2721
epss 0.009 https://api.first.org/data/v1/epss?cve=CVE-2015-2721
epss 0.009 https://api.first.org/data/v1/epss?cve=CVE-2015-2721
epss 0.009 https://api.first.org/data/v1/epss?cve=CVE-2015-2721
epss 0.009 https://api.first.org/data/v1/epss?cve=CVE-2015-2721
epss 0.009 https://api.first.org/data/v1/epss?cve=CVE-2015-2721
epss 0.009 https://api.first.org/data/v1/epss?cve=CVE-2015-2721
epss 0.009 https://api.first.org/data/v1/epss?cve=CVE-2015-2721
epss 0.009 https://api.first.org/data/v1/epss?cve=CVE-2015-2721
epss 0.009 https://api.first.org/data/v1/epss?cve=CVE-2015-2721
epss 0.009 https://api.first.org/data/v1/epss?cve=CVE-2015-2721
epss 0.009 https://api.first.org/data/v1/epss?cve=CVE-2015-2721
epss 0.009 https://api.first.org/data/v1/epss?cve=CVE-2015-2721
epss 0.009 https://api.first.org/data/v1/epss?cve=CVE-2015-2721
epss 0.009 https://api.first.org/data/v1/epss?cve=CVE-2015-2721
epss 0.009 https://api.first.org/data/v1/epss?cve=CVE-2015-2721
epss 0.009 https://api.first.org/data/v1/epss?cve=CVE-2015-2721
epss 0.009 https://api.first.org/data/v1/epss?cve=CVE-2015-2721
epss 0.009 https://api.first.org/data/v1/epss?cve=CVE-2015-2721
epss 0.009 https://api.first.org/data/v1/epss?cve=CVE-2015-2721
epss 0.009 https://api.first.org/data/v1/epss?cve=CVE-2015-2721
epss 0.009 https://api.first.org/data/v1/epss?cve=CVE-2015-2721
epss 0.009 https://api.first.org/data/v1/epss?cve=CVE-2015-2721
epss 0.009 https://api.first.org/data/v1/epss?cve=CVE-2015-2721
epss 0.009 https://api.first.org/data/v1/epss?cve=CVE-2015-2721
epss 0.009 https://api.first.org/data/v1/epss?cve=CVE-2015-2721
epss 0.009 https://api.first.org/data/v1/epss?cve=CVE-2015-2721
epss 0.009 https://api.first.org/data/v1/epss?cve=CVE-2015-2721
epss 0.009 https://api.first.org/data/v1/epss?cve=CVE-2015-2721
epss 0.009 https://api.first.org/data/v1/epss?cve=CVE-2015-2721
epss 0.009 https://api.first.org/data/v1/epss?cve=CVE-2015-2721
epss 0.009 https://api.first.org/data/v1/epss?cve=CVE-2015-2721
epss 0.009 https://api.first.org/data/v1/epss?cve=CVE-2015-2721
epss 0.009 https://api.first.org/data/v1/epss?cve=CVE-2015-2721
epss 0.009 https://api.first.org/data/v1/epss?cve=CVE-2015-2721
epss 0.009 https://api.first.org/data/v1/epss?cve=CVE-2015-2721
epss 0.009 https://api.first.org/data/v1/epss?cve=CVE-2015-2721
epss 0.009 https://api.first.org/data/v1/epss?cve=CVE-2015-2721
epss 0.009 https://api.first.org/data/v1/epss?cve=CVE-2015-2721
epss 0.009 https://api.first.org/data/v1/epss?cve=CVE-2015-2721
epss 0.009 https://api.first.org/data/v1/epss?cve=CVE-2015-2721
epss 0.009 https://api.first.org/data/v1/epss?cve=CVE-2015-2721
epss 0.009 https://api.first.org/data/v1/epss?cve=CVE-2015-2721
epss 0.009 https://api.first.org/data/v1/epss?cve=CVE-2015-2721
epss 0.009 https://api.first.org/data/v1/epss?cve=CVE-2015-2721
epss 0.00914 https://api.first.org/data/v1/epss?cve=CVE-2015-2721
epss 0.00914 https://api.first.org/data/v1/epss?cve=CVE-2015-2721
epss 0.00914 https://api.first.org/data/v1/epss?cve=CVE-2015-2721
epss 0.00914 https://api.first.org/data/v1/epss?cve=CVE-2015-2721
epss 0.00914 https://api.first.org/data/v1/epss?cve=CVE-2015-2721
epss 0.00914 https://api.first.org/data/v1/epss?cve=CVE-2015-2721
epss 0.00914 https://api.first.org/data/v1/epss?cve=CVE-2015-2721
epss 0.00914 https://api.first.org/data/v1/epss?cve=CVE-2015-2721
epss 0.00914 https://api.first.org/data/v1/epss?cve=CVE-2015-2721
epss 0.00914 https://api.first.org/data/v1/epss?cve=CVE-2015-2721
epss 0.00914 https://api.first.org/data/v1/epss?cve=CVE-2015-2721
epss 0.00914 https://api.first.org/data/v1/epss?cve=CVE-2015-2721
epss 0.00914 https://api.first.org/data/v1/epss?cve=CVE-2015-2721
epss 0.00914 https://api.first.org/data/v1/epss?cve=CVE-2015-2721
epss 0.00914 https://api.first.org/data/v1/epss?cve=CVE-2015-2721
epss 0.00914 https://api.first.org/data/v1/epss?cve=CVE-2015-2721
epss 0.00914 https://api.first.org/data/v1/epss?cve=CVE-2015-2721
epss 0.00914 https://api.first.org/data/v1/epss?cve=CVE-2015-2721
epss 0.00914 https://api.first.org/data/v1/epss?cve=CVE-2015-2721
epss 0.00914 https://api.first.org/data/v1/epss?cve=CVE-2015-2721
epss 0.00914 https://api.first.org/data/v1/epss?cve=CVE-2015-2721
epss 0.00914 https://api.first.org/data/v1/epss?cve=CVE-2015-2721
epss 0.03381 https://api.first.org/data/v1/epss?cve=CVE-2015-2721
generic_textual Medium https://bugzilla.mozilla.org/show_bug.cgi?id=1086145
rhbs medium https://bugzilla.redhat.com/show_bug.cgi?id=1236967
generic_textual Medium https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-2721
generic_textual Medium https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-2724
generic_textual Medium https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-2728
generic_textual Medium https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-2730
generic_textual Medium https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-2731
generic_textual Medium https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-2734
generic_textual Medium https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-2735
generic_textual Medium https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-2736
generic_textual Medium https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-2737
generic_textual Medium https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-2738
generic_textual Medium https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-2739
generic_textual Medium https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-2740
generic_textual Medium https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-2743
generic_textual Medium https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-4000
generic_textual Medium https://developer.mozilla.org/en-US/docs/Mozilla/Projects/NSS/NSS_3.19_release_notes
cvssv2 4.3 https://nvd.nist.gov/vuln/detail/CVE-2015-2721
generic_textual Medium https://smacktls.com
generic_textual Medium https://ubuntu.com/security/notices/USN-2656-1
generic_textual Medium https://ubuntu.com/security/notices/USN-2656-2
generic_textual Medium https://ubuntu.com/security/notices/USN-2672-1
generic_textual Medium https://ubuntu.com/security/notices/USN-2673-1
generic_textual none https://www.mozilla.org/en-US/security/advisories/mfsa2015-71
generic_textual Medium https://www.mozilla.org/en-US/security/advisories/mfsa2015-71/
generic_textual Medium http://www.mozilla.org/security/announce/2015/mfsa2015-71.html
cvssv3.1 9.8 http://www.oracle.com/technetwork/security-advisory/cpuapr2016v3-2985753.html
generic_textual CRITICAL http://www.oracle.com/technetwork/security-advisory/cpuapr2016v3-2985753.html
cvssv3.1 9.8 http://www.oracle.com/technetwork/security-advisory/cpujul2016-2881720.html
generic_textual CRITICAL http://www.oracle.com/technetwork/security-advisory/cpujul2016-2881720.html
cvssv3.1 8.8 http://www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.html
generic_textual HIGH http://www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.html
cvssv3.1 7.5 http://www.oracle.com/technetwork/topics/security/bulletinoct2015-2511968.html
generic_textual MODERATE http://www.oracle.com/technetwork/topics/security/bulletinoct2015-2511968.html
Reference id Reference type URL
http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00025.html
http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00031.html
http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00033.html
http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00034.html
http://lists.opensuse.org/opensuse-security-announce/2015-08/msg00021.html
http://people.canonical.com/~ubuntu-security/cve/2015/CVE-2015-2721.html
http://rhn.redhat.com/errata/RHSA-2015-1185.html
http://rhn.redhat.com/errata/RHSA-2015-1664.html
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2015-2721.json
https://api.first.org/data/v1/epss?cve=CVE-2015-2721
https://bugzilla.mozilla.org/show_bug.cgi?id=1086145
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-2721
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-2724
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-2728
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-2730
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-2731
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-2734
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-2735
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-2736
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-2737
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-2738
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-2739
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-2740
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-2743
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-4000
https://developer.mozilla.org/en-US/docs/Mozilla/Projects/NSS/NSS_3.19_release_notes
https://security.gentoo.org/glsa/201512-10
https://security.gentoo.org/glsa/201701-46
https://smacktls.com
https://ubuntu.com/security/notices/USN-2656-1
https://ubuntu.com/security/notices/USN-2656-2
https://ubuntu.com/security/notices/USN-2672-1
https://ubuntu.com/security/notices/USN-2673-1
https://www.mozilla.org/en-US/security/advisories/mfsa2015-71/
http://www.debian.org/security/2015/dsa-3324
http://www.debian.org/security/2015/dsa-3336
http://www.mozilla.org/security/announce/2015/mfsa2015-71.html
http://www.oracle.com/technetwork/security-advisory/cpuapr2016v3-2985753.html
http://www.oracle.com/technetwork/security-advisory/cpujul2016-2881720.html
http://www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.html
http://www.oracle.com/technetwork/topics/security/bulletinoct2015-2511968.html
http://www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.html
http://www.securityfocus.com/bid/75541
http://www.securityfocus.com/bid/83398
http://www.securityfocus.com/bid/91787
http://www.securitytracker.com/id/1032783
http://www.securitytracker.com/id/1032784
http://www.ubuntu.com/usn/USN-2656-1
http://www.ubuntu.com/usn/USN-2656-2
http://www.ubuntu.com/usn/USN-2672-1
http://www.ubuntu.com/usn/USN-2673-1
1236967 https://bugzilla.redhat.com/show_bug.cgi?id=1236967
cpe:2.3:a:novell:suse_linux_enterprise_software_development_kit:12.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:novell:suse_linux_enterprise_software_development_kit:12.0:*:*:*:*:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:lts:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:lts:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:14.10:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:canonical:ubuntu_linux:14.10:*:*:*:*:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:15.04:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:canonical:ubuntu_linux:15.04:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
cpe:2.3:o:novell:suse_linux_enterprise_desktop:12.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:novell:suse_linux_enterprise_desktop:12.0:*:*:*:*:*:*:*
cpe:2.3:o:novell:suse_linux_enterprise_server:11:sp4:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:novell:suse_linux_enterprise_server:11:sp4:*:*:*:*:*:*
cpe:2.3:o:novell:suse_linux_enterprise_server:12.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:novell:suse_linux_enterprise_server:12.0:*:*:*:*:*:*:*
cpe:2.3:o:novell:suse_linux_enterprise_software_development_kit:12.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:novell:suse_linux_enterprise_software_development_kit:12.0:*:*:*:*:*:*:*
cpe:2.3:o:oracle:solaris:11.3:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:oracle:solaris:11.3:*:*:*:*:*:*:*
cpe:2.3:o:oracle:vm_server:3.2:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:oracle:vm_server:3.2:*:*:*:*:*:*:*
CVE-2015-2721 https://nvd.nist.gov/vuln/detail/CVE-2015-2721
mfsa2015-71 https://www.mozilla.org/en-US/security/advisories/mfsa2015-71
RHSA-2015:1185 https://access.redhat.com/errata/RHSA-2015:1185
RHSA-2015:1664 https://access.redhat.com/errata/RHSA-2015:1664
USN-2656-1 https://usn.ubuntu.com/2656-1/
USN-2656-2 https://usn.ubuntu.com/2656-2/
USN-2672-1 https://usn.ubuntu.com/2672-1/
USN-2673-1 https://usn.ubuntu.com/2673-1/
No exploits are available.
Vector: AV:N/AC:M/Au:N/C:N/I:P/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2015-2721
Exploitability (E) Access Vector (AV) Access Complexity (AC) Authentication (Au) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

high

functional

unproven

proof_of_concept

not_defined

local

adjacent_network

network

high

medium

low

multiple

single

none

none

partial

complete

none

partial

complete

none

partial

complete
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Found at http://www.oracle.com/technetwork/security-advisory/cpuapr2016v3-2985753.html
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Found at http://www.oracle.com/technetwork/security-advisory/cpujul2016-2881720.html
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H Found at http://www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.html
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Found at http://www.oracle.com/technetwork/topics/security/bulletinoct2015-2511968.html
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Exploit Prediction Scoring System (EPSS)
Percentile 0.39669
EPSS Score 0.00090
Published At Dec. 17, 2024, midnight
Date Actor Action Source VulnerableCode Version
There are no relevant records.