CVE-2025-1009: Use-after-free in XSLT

Published Feb 4, 2025
·
Updated

An attacker could have caused a use-after-free via crafted XSLT data, leading to a potentially exploitable crash.

Affected Software

13 affected componentsFixes available
debian/firefox
135.0-1
debian/firefox-esr<=115.14.0esr-1~deb11u1, <=128.5.0esr-1~deb12u1
128.7.0esr-1~deb11u1128.7.0esr-1~deb12u1128.7.0esr-1
debian/thunderbird<=1:115.12.0-1~deb11u1, <=1:128.5.0esr-1~deb12u1, <=1:128.6.0esr-1
1:128.7.0esr-1~deb11u11:128.7.0esr-1~deb12u1
Mozilla Thunderbird<128.7
128.7
Mozilla Firefox<115.20.0
Mozilla Firefox<135.0
Mozilla Firefox>=128.1.0<128.7.0
Mozilla Thunderbird>=128.0.1<128.7.0
Mozilla Thunderbird>=131.0<135.0
Mozilla Firefox<135
135
Mozilla Firefox ESR<115.20
115.20
Mozilla Firefox ESR<128.7
128.7
Mozilla Thunderbird<135
135

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade debian/firefox to a version that resolves this vulnerability.

    Fixed in 135.0-1
  2. Upgrade

    Upgrade debian/firefox-esr to a version that resolves this vulnerability.

    Fixed in 128.7.0esr-1~deb11u1Fixed in 128.7.0esr-1~deb12u1Fixed in 128.7.0esr-1
  3. Upgrade

    Upgrade debian/thunderbird to a version that resolves this vulnerability.

    Fixed in 1:128.7.0esr-1~deb11u1Fixed in 1:128.7.0esr-1~deb12u1
  4. Upgrade

    Upgrade Thunderbird to a version that resolves this vulnerability.

    Fixed in 128.7
  5. Upgrade

    Upgrade Firefox to a version that resolves this vulnerability.

    Fixed in 135
  6. Upgrade

    Upgrade Firefox ESR to a version that resolves this vulnerability.

    Fixed in 115.20
  7. Upgrade

    Upgrade Firefox ESR to a version that resolves this vulnerability.

    Fixed in 128.7
  8. Upgrade

    Upgrade Thunderbird to a version that resolves this vulnerability.

    Fixed in 135

Event History

Feb 4, 2025
CVE Published
via Mozilla·12:00 AM
CVE Published
via MITRE·01:58 PM
Data Sourced
via MITRE·01:58 PM
Description
Data Sourced
via NVD·02:15 PM
DescriptionSeverityWeaknessAffected Software
Data Sourced
via Red Hat·03:01 PM
DescriptionSeverityAffected Software
Feb 15, 2025
Data Sourced
via Ubuntu·05:06 AM
RemedyDescriptionSeverityAffected Software

Parent advisories

This vulnerability appears in the following advisories.

Peer vulnerabilities

Found alongside the following vulnerabilities.

Frequently Asked Questions

1

What is the severity of CVE-2025-1009?

CVE-2025-1009 is considered a potentially exploitable vulnerability due to a use-after-free condition in Firefox and Thunderbird.

2

How do I fix CVE-2025-1009?

To fix CVE-2025-1009, update Firefox to version 135 or Thunderbird to version 128.7 or higher.

3

Which versions of Firefox are affected by CVE-2025-1009?

CVE-2025-1009 affects Firefox versions below 135.

4

Which versions of Thunderbird are affected by CVE-2025-1009?

CVE-2025-1009 affects Thunderbird versions below 128.7.

5

What types of attacks can CVE-2025-1009 facilitate?

CVE-2025-1009 can facilitate crashes that may be exploited by attackers through crafted XSLT data.

Company

Resources

Contact

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