expat: Integer overflow leading to buffer overflow in XML_GetBuffer()
Published May 14, 2015
7.5
HIGHCVSS 2.0
EPSS 7.23%
Description
Buffer overflow in the XML parser in Mozilla Firefox before 38.0, Firefox ESR 31.x before 31.7, and Thunderbird before 31.7 allows remote attackers to execute arbitrary code by providing a large amount of compressed XML data, a related issue to CVE-2015-1283.
Affected products
No data.
Configuration 2
- 12.0
- 12.0
- 12.0
- 13.1
- 13.2
Configuration 3
- ≤ 31.5
Configuration 5
- 31.0
- 31.1.0
- 31.1.1
- 31.3.0
- 31.5.1
- 31.5.2
- 31.5.3
- 31.1
- 31.2
- 31.3
- 31.4
- 31.5
- 31.6.0
No data.
Red Hat Ansible Tower 3.5 for RHEL 7
ansible-tower-35/ansible-tower:3.5.6-1
Fixed · RHBA-2020:1539
Red Hat Ansible Tower 3.6 for RHEL 7
ansible-tower-36/ansible-tower:3.6.4-1
Fixed · RHBA-2020:1540
Red Hat Enterprise Linux 5
firefox-0:38.0-4.el5_11
Fixed · RHSA-2015:0988
Red Hat Enterprise Linux 5
thunderbird-0:31.7.0-1.el5_11
Fixed · RHSA-2015:1012
Red Hat Enterprise Linux 6
firefox-0:38.0-4.el6_6
Fixed · RHSA-2015:0988
Red Hat Enterprise Linux 6
thunderbird-0:31.7.0-1.el6_6
Fixed · RHSA-2015:1012
Red Hat Enterprise Linux 7
expat-0:2.1.0-11.el7
Fixed · RHSA-2020:1011
Red Hat Enterprise Linux 7
firefox-0:38.0-3.ael7b_1
Fixed · RHSA-2015:0988
Red Hat Enterprise Linux 7
thunderbird-0:31.7.0-1.ael7b_1
Fixed · RHSA-2015:1012
Red Hat Enterprise Linux 7.7 Extended Update Support
expat-0:2.1.0-11.el7_7
Fixed · RHSA-2020:2508
Red Hat Enterprise Linux 5
expat
Will not fix
Red Hat Enterprise Linux 6
expat
Will not fix
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Ansible Tower 3.5 for RHEL 7 | ansible-tower-35/ansible-tower:3.5.6-1 | Fixed | RHBA-2020:1539 |
| Red Hat Ansible Tower 3.6 for RHEL 7 | ansible-tower-36/ansible-tower:3.6.4-1 | Fixed | RHBA-2020:1540 |
| Red Hat Enterprise Linux 5 | firefox-0:38.0-4.el5_11 | Fixed | RHSA-2015:0988 |
| Red Hat Enterprise Linux 5 | thunderbird-0:31.7.0-1.el5_11 | Fixed | RHSA-2015:1012 |
| Red Hat Enterprise Linux 6 | firefox-0:38.0-4.el6_6 | Fixed | RHSA-2015:0988 |
| Red Hat Enterprise Linux 6 | thunderbird-0:31.7.0-1.el6_6 | Fixed | RHSA-2015:1012 |
| Red Hat Enterprise Linux 7 | expat-0:2.1.0-11.el7 | Fixed | RHSA-2020:1011 |
| Red Hat Enterprise Linux 7 | firefox-0:38.0-3.ael7b_1 | Fixed | RHSA-2015:0988 |
| Red Hat Enterprise Linux 7 | thunderbird-0:31.7.0-1.ael7b_1 | Fixed | RHSA-2015:1012 |
| Red Hat Enterprise Linux 7.7 Extended Update Support | expat-0:2.1.0-11.el7_7 | Fixed | RHSA-2020:2508 |
| Red Hat Enterprise Linux 5 | expat | Will not fix | n/a |
| Red Hat Enterprise Linux 6 | expat | Will not fix | n/a |
No package ranges for this CVE.
Remediation
Red Hat statement
This issue affects the version of expat package as shipped with Red Hat Enterprise Linux 5, 6 and 7. Red Hat Product Security has rated this issue as having Moderate security impact, a future update may address this flaw. Red Hat Enterprise Linux 5 is now in Extended Life Cycle phase of the support and maintenance life cycle. This issue is not currently planned to be addressed in future updates.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
AV:N/AC:L/Au:N/C:P/I:P/A:P
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
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 (15 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 7.23% (0.07227) | 94.14th | v5 (v2026.06.15) |
| Jun 15, 2026 | 7.42% (0.07417) | 93.63th | v5 (v2026.06.15) |
| Mar 30, 2025 | 6.06% (0.06064) | 89.80th | v4 (v2025.03.14) |
| Mar 29, 2025 | 10.18% (0.10176) | 88.45th | v4 (v2025.03.14) |
| Mar 17, 2025 | 6.06% (0.06064) | 90.04th | v4 (v2025.03.14) |
| Dec 17, 2024 | 4.42% (0.04425) | 92.31th | v3 (v2023.03.01) |
| Dec 12, 2024 | 6.40% (0.06405) | 93.95th | v3 (v2023.03.01) |
| Sep 17, 2024 | 6.37% (0.06366) | 93.80th | v3 (v2023.03.01) |
| Jul 28, 2024 | 4.60% (0.04596) | 92.64th | v3 (v2023.03.01) |
| Jan 19, 2024 | 3.30% (0.03296) | 90.37th | v3 (v2023.03.01) |
| Jun 13, 2023 | 2.21% (0.02211) | 87.88th | v3 (v2023.03.01) |
| Mar 7, 2023 | 2.16% (0.02161) | 87.54th | v3 (v2023.03.01) |
| Mar 6, 2023 | 14.36% (0.14355) | 95.83th | v2 (v2022.01.01) |
| Apr 1, 2022 | 14.36% (0.14355) | 95.47th | v2 (v2022.01.01) |
| Feb 4, 2022 | 14.36% (0.14355) | 91.00th | v2 (v2022.01.01) |
References (24)
- http://lists.opensuse.org/opensuse-security-announce/2015-05/msg00012.html vendor-advisoryx_refsource_SUSE
- http://lists.opensuse.org/opensuse-security-announce/2015-05/msg00054.html vendor-advisoryx_refsource_SUSEThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2015-06/msg00000.html vendor-advisoryx_refsource_SUSE
- http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00031.html vendor-advisoryx_refsource_SUSE
- http://lists.opensuse.org/opensuse-updates/2015-05/msg00036.html vendor-advisoryx_refsource_SUSEThird Party Advisory
- http://rhn.redhat.com/errata/RHSA-2015-0988.html vendor-advisoryx_refsource_REDHAT
- http://rhn.redhat.com/errata/RHSA-2015-1012.html vendor-advisoryx_refsource_REDHAT
- http://www.debian.org/security/2015/dsa-3260 vendor-advisoryx_refsource_DEBIAN
- http://www.debian.org/security/2015/dsa-3264 vendor-advisoryx_refsource_DEBIAN
- http://www.mozilla.org/security/announce/2015/mfsa2015-54.html x_refsource_CONFIRMVendor Advisory
- http://www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.html x_refsource_CONFIRMThird Party Advisory
- http://www.securityfocus.com/bid/74611 vdb-entryx_refsource_BID
- http://www.ubuntu.com/usn/USN-2602-1 vendor-advisoryx_refsource_UBUNTU
- http://www.ubuntu.com/usn/USN-2603-1 vendor-advisoryx_refsource_UBUNTU
- https://access.redhat.com/security/cve/CVE-2015-2716 Vendor Advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=1140537 x_refsource_CONFIRMIssue Tracking
- https://bugzilla.redhat.com/show_bug.cgi?id=1220607 Issue Tracking
- https://hg.mozilla.org/releases/mozilla-esr31/rev/2f3e78643f5c x_refsource_CONFIRM
- https://kc.mcafee.com/corporate/index?page=content&id=SB10365 x_refsource_CONFIRM
- https://nvd.nist.gov/vuln/detail/CVE-2015-2716
- https://security.gentoo.org/glsa/201605-06 vendor-advisoryx_refsource_GENTOO
- https://www.cve.org/CVERecord?id=CVE-2015-2716
- https://www.mozilla.org/en-US/security/known-vulnerabilities/thunderbird/#thunderbird31.7 x_refsource_CONFIRM
- https://www.tenable.com/security/tns-2016-20 x_refsource_CONFIRM
Change history (0)
No recorded changes yet.