Description
A use-after-free and use-after-scope vulnerability when logging errors from headers for XML HTTP Requests (XHR). This could result in a potentially exploitable crash. This vulnerability affects Firefox < 54, Firefox ESR < 52.2, and Thunderbird < 52.2.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Mozilla | Firefox | unspecified – < 54 | 54 |
| Mozilla | Firefox ESR | unspecified – < 52.2 | 52.2 |
| Mozilla | Thunderbird | unspecified – < 52.2 | 52.2 |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | firefox-esr | 52.2.0esr-1 | — |
| Debian 13 | firefox-esr | 52.2.0esr-1 | — |
| Debian 12 | firefox-esr | 52.2.0esr-1 | — |
| Debian 9 | firefox-esr | 52.2.0esr-1~deb9u1 | DSA-3881-1 |
| Debian 9 | icedove | 1:52.2.1-4~deb9u1 | DSA-3918-1 |
| Debian 8 | firefox-esr | 52.2.0esr-1~deb8u1 | DSA-3881-1 |
| Debian 8 | icedove | 1:52.2.1-4~deb8u1 | DSA-3918-1 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 7 | firefox-esr | 52.2.0esr-1~deb7u1 | DLA-991-1 |
| Debian 7 | icedove | 1:52.2.1-1~deb7u1 | DLA-1007-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 16.04 LTS | firefox | 54.0+build3-0ubuntu0.16.04.1 | USN-3315-1 |
| Ubuntu 16.04 LTS | thunderbird | 1:52.2.1+build1-0ubuntu0.16.04.1 | USN-3321-1 |
| Ubuntu 14.04 LTS | firefox | 54.0+build3-0ubuntu0.14.04.1 | USN-3315-1 |
| Ubuntu 14.04 LTS | thunderbird | 1:52.2.1+build1-0ubuntu0.14.04.1 | USN-3321-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 7 | firefox +1 | 52.2.0-1.el7_3 | RHSA-2017:1561, RHSA-2017:1440 |
| RHEL 6 | firefox +1 | 52.2.0-1.el6_9 | RHSA-2017:1561, RHSA-2017:1440 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP2 | MozillaFirefox | 52.2.0esr-108.3 | SUSE-SU-2017:1669-1 |
| SLES 12 SP2 | MozillaFirefox-branding-SLE | 52-31.1 | SUSE-SU-2017:1669-1 |
| SLES 12 SP1 | MozillaFirefox | 52.2.0esr-108.3 | SUSE-SU-2017:1669-1 |
| SLES 12 SP1 | MozillaFirefox-branding-SLE | 52-31.1 | SUSE-SU-2017:1669-1 |
| SLES 12 | MozillaFirefox | 52.2.0esr-108.3 | SUSE-SU-2017:1669-1 |
| SLES 12 | MozillaFirefox-branding-SLE | 52-31.1 | SUSE-SU-2017:1669-1 |
| SLES 11 SP4 | MozillaFirefox | 52.2.0esr-72.5.2 | SUSE-SU-2017:2235-1 |
| SLES 11 SP4 | MozillaFirefox-branding-SLED | 52-24.3.44 | SUSE-SU-2017:2235-1 |
| SLES 11 SP4 | firefox-gcc5 +1 | 5.3.1+r233831-7.1 | SUSE-SU-2017:2235-1 |
| SLES 11 SP4 | mozilla-nss | 3.29.5-47.3.2 | SUSE-SU-2017:2235-1 |
| SLES 11 SP3 | MozillaFirefox | 52.2.0esr-72.5.2 | SUSE-SU-2017:2235-1 |
| SLES 11 SP3 | MozillaFirefox-branding-SLED | 52-24.3.44 | SUSE-SU-2017:2235-1 |
| SLES 11 SP3 | firefox-gcc5 +1 | 5.3.1+r233831-7.1 | SUSE-SU-2017:2235-1 |
| SLES 11 SP3 | mozilla-nss | 3.29.5-47.3.2 | SUSE-SU-2017:2235-1 |
Show 7 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 12 SP2 | MozillaFirefox | 52.2.0esr-108.3 | SUSE-SU-2017:1669-1 |
| SLES for SAP 12 SP2 | MozillaFirefox-branding-SLE | 52-31.1 | SUSE-SU-2017:1669-1 |
| SLES for SAP 12 SP1 | MozillaFirefox | 52.2.0esr-108.3 | SUSE-SU-2017:1669-1 |
| SLES for SAP 12 SP1 | MozillaFirefox-branding-SLE | 52-31.1 | SUSE-SU-2017:1669-1 |
| SLES for SAP 12 | MozillaFirefox | 52.2.0esr-108.3 | SUSE-SU-2017:1669-1 |
| SLES for SAP 12 | MozillaFirefox-branding-SLE | 52-31.1 | SUSE-SU-2017:1669-1 |
| SLES for SAP 11 SP4 | MozillaFirefox | 52.2.0esr-72.5.2 | SUSE-SU-2017:2235-1 |
| SLES for SAP 11 SP4 | MozillaFirefox-branding-SLED | 52-24.3.44 | SUSE-SU-2017:2235-1 |
| SLES for SAP 11 SP4 | firefox-gcc5 +1 | 5.3.1+r233831-7.1 | SUSE-SU-2017:2235-1 |
| SLES for SAP 11 SP4 | mozilla-nss | 3.29.5-47.3.2 | SUSE-SU-2017:2235-1 |
| SUSE Package Hub 12 | MozillaThunderbird | 52.2-36.1 | openSUSE-SU-2017:1579-1 |
| SUSE OpenStack Cloud 6 | MozillaFirefox | 52.2.0esr-108.3 | SUSE-SU-2017:1669-1 |
| SUSE OpenStack Cloud 6 | MozillaFirefox-branding-SLE | 52-31.1 | SUSE-SU-2017:1669-1 |
| SUSE Linux Enterprise Point of Sale 11 SP3 | MozillaFirefox | 52.2.0esr-72.5.2 | SUSE-SU-2017:2235-1 |
| SUSE Linux Enterprise Point of Sale 11 SP3 | MozillaFirefox-branding-SLED | 52-24.3.44 | SUSE-SU-2017:2235-1 |
| SUSE Linux Enterprise Point of Sale 11 SP3 | firefox-gcc5 +1 | 5.3.1+r233831-7.1 | SUSE-SU-2017:2235-1 |
| SUSE Linux Enterprise Point of Sale 11 SP3 | mozilla-nss | 3.29.5-47.3.2 | SUSE-SU-2017:2235-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | MozillaThunderbird | 91.1.1-1.1 | openSUSE-SU-2024:10601-1 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 7 | firefox +1 | 52.2.0-1.0.1.el7_3 | ELSA-2017-1561, ELSA-2017-1440 |
Advisories 14
- RHSA-2017:1561 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- RHSA-2017:1440 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- USN-3315-1 firefox vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- USN-3321-1 thunderbird vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- DLA-991-1 firefox-esr - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DSA-3918-1 icedove - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DSA-3881-1 firefox-esr - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-1007-1 icedove - security update Debian Security (DSA / DLA) · Mar 9, 2026
- SUSE-SU-2017:2235-1 Security update for MozillaFirefox, MozillaFirefox-branding-SLED, firefox-gcc5, mozilla-nss SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2017:1579-1 Security update for Mozilla Thunderbird SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2017:1669-1 Security update for MozillaFirefox, MozillaFirefox-branding-SLE SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:10601-1 MozillaThunderbird-91.1.1-1.1 on GA media SUSE / openSUSE Security Updates · May 7, 2025
- ELSA-2017-1561 Important: thunderbird security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Jun 21, 2017
- ELSA-2017-1440 Critical: firefox security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Jun 14, 2017
References
- 99057 vdb-entry
- https://bugzilla.mozilla.org/show_bug.cgi?id=1366595
- https://www.mozilla.org/security/advisories/mfsa2017-15/
- DSA-3918 vendor-advisory
- 1038689 vdb-entry
- DSA-3881 vendor-advisory
- RHSA-2017:1440 vendor-advisory
- RHSA-2017:1561 vendor-advisory
- https://www.mozilla.org/security/advisories/mfsa2017-17/
- https://www.mozilla.org/security/advisories/mfsa2017-16/