CVE-2019-15903: High severity Apple tvOS vulnerability

Published Sep 4, 2019
·
Updated

In libexpat before 2.2.8, crafted XML input could fool the parser into changing from DTD parsing to document parsing too early; a consecutive call to XMLGetCurrentLineNumber (or XMLGetCurrentColumnNumber) then resulted in a heap-based buffer over-read.

Other sources

In libexpat before 2.2.8, crafted XML input could fool the parser into changing from DTD parsing to document parsing too early. A subsequent call to XMLGetCurrentLineNumber or XMLGetCurrentColumnNumber then resulted in a heap-based buffer over-read.

— Mozilla

libexpat is vulnerable to a denial of service, caused by a heap-based buffer over-read in XMLGetCurrentLineNumber. By using a specially-crafted XML input, a remote attacker could exploit this vulnerability to cause the application to crash.

— IBM

libexpat. This issue was addressed by updating to expat version 2.2.8.

Credit

Joonun Jang

Affected Software

46 affected componentsFixes available
redhat/jbcs-httpd24-curl<0:7.64.1-36.jbcs.el6
0:7.64.1-36.jbcs.el6
redhat/jbcs-httpd24-httpd<0:2.4.37-57.jbcs.el6
0:2.4.37-57.jbcs.el6
redhat/jbcs-httpd24-nghttp2<0:1.39.2-25.jbcs.el6
0:1.39.2-25.jbcs.el6
redhat/jbcs-httpd24-curl<0:7.64.1-36.jbcs.el7
0:7.64.1-36.jbcs.el7
redhat/jbcs-httpd24-httpd<0:2.4.37-57.jbcs.el7
0:2.4.37-57.jbcs.el7
redhat/jbcs-httpd24-nghttp2<0:1.39.2-25.jbcs.el7
0:1.39.2-25.jbcs.el7
redhat/jbcs-httpd24-openssl-pkcs11<0:0.4.10-7.jbcs.el7
0:0.4.10-7.jbcs.el7
redhat/thunderbird<0:68.2.0-2.el6_10
0:68.2.0-2.el6_10
redhat/firefox<0:68.2.0-1.el7_7
0:68.2.0-1.el7_7
redhat/thunderbird<0:68.2.0-1.el7_7
0:68.2.0-1.el7_7
redhat/expat<0:2.1.0-12.el7
0:2.1.0-12.el7
redhat/firefox<0:68.2.0-2.el8_0
0:68.2.0-2.el8_0
redhat/thunderbird<0:68.2.0-1.el8_0
0:68.2.0-1.el8_0
redhat/expat<0:2.2.5-4.el8
0:2.2.5-4.el8
debian/expat<=2.2.0-2+deb9u2, <=2.2.0-1, <=2.2.6-2, <=2.2.7-1
2.2.7-22.2.6-2+deb10u12.2.0-2+deb9u3
Apple tvOS<13.3
13.3
Apple macOS Catalina<10.15.2
10.15.2
Apple Mojave
Apple High Sierra
Apple WatchOS<6.1.1
6.1.1
Apple iCloud for Windows<7.16
7.16
Apple iCloud for Windows<10.9
10.9
IBM RDNG<=6.0.2
IBM RDNG<=6.0.6.1
IBM RDNG<=6.0.6
IBM DOORS Next<=7.0
Mozilla Thunderbird<68.2
68.2
Libexpat Project Libexpat<2.2.8
Python Python>=2.7.0<2.7.17
Python Python>=3.5.0<3.5.8
Python Python>=3.6.0<3.6.10
Python Python>=3.7.0<3.7.5
Mozilla Firefox ESR<68.2
68.2
Mozilla Firefox<70
70
Apple iTunes for Windows<12.10.3
12.10.3
Apple iOS<13.3
13.3
Apple iPadOS<13.3
13.3
redhat/expat<2.2.8
2.2.8
redhat/firefox<68.2
68.2
redhat/thunderbird<68.2
68.2
debian/chromium
150.0.7871.100-1~deb12u1155.0.8059.39-1~deb12u1150.0.7871.181-1~deb13u1155.0.8059.39-1~deb13u1154.0.8037.92-1155.0.8059.79-1
debian/expat
2.5.0-1+deb12u22.5.0-1+deb12u42.8.3-1~deb13u12.9.0-1
debian/firefox
157.0.1-1
debian/firefox-esr
140.12.0esr-1~deb12u1153.5.0esr-1~deb12u1140.15.0esr-1~deb13u1153.5.0esr-1~deb13u1153.4.0esr-1153.5.0esr-1
debian/libxmltok<=1.2-4
debian/thunderbird
1:140.12.0esr-1~deb12u11:140.17.0esr-1~deb12u11:140.12.0esr-1~deb13u11:140.17.0esr-1~deb13u11:153.4.0esr-1

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade redhat/jbcs-httpd24-curl to a version that resolves this vulnerability.

    Fixed in 0:7.64.1-36.jbcs.el6
  2. Upgrade

    Upgrade redhat/jbcs-httpd24-httpd to a version that resolves this vulnerability.

    Fixed in 0:2.4.37-57.jbcs.el6
  3. Upgrade

    Upgrade redhat/jbcs-httpd24-nghttp2 to a version that resolves this vulnerability.

    Fixed in 0:1.39.2-25.jbcs.el6
  4. Upgrade

    Upgrade redhat/jbcs-httpd24-curl to a version that resolves this vulnerability.

    Fixed in 0:7.64.1-36.jbcs.el7
  5. Upgrade

    Upgrade redhat/jbcs-httpd24-httpd to a version that resolves this vulnerability.

    Fixed in 0:2.4.37-57.jbcs.el7
  6. Upgrade

    Upgrade redhat/jbcs-httpd24-nghttp2 to a version that resolves this vulnerability.

    Fixed in 0:1.39.2-25.jbcs.el7
  7. Upgrade

    Upgrade redhat/jbcs-httpd24-openssl-pkcs11 to a version that resolves this vulnerability.

    Fixed in 0:0.4.10-7.jbcs.el7
  8. Upgrade

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

    Fixed in 0:68.2.0-2.el6_10
  9. Upgrade

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

    Fixed in 0:68.2.0-1.el7_7
  10. Upgrade

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

    Fixed in 0:68.2.0-1.el7_7
  11. Upgrade

    Upgrade redhat/expat to a version that resolves this vulnerability.

    Fixed in 0:2.1.0-12.el7
  12. Upgrade

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

    Fixed in 0:68.2.0-2.el8_0
  13. Upgrade

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

    Fixed in 0:68.2.0-1.el8_0
  14. Upgrade

    Upgrade redhat/expat to a version that resolves this vulnerability.

    Fixed in 0:2.2.5-4.el8
  15. Upgrade

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

    Fixed in 2.2.7-2Fixed in 2.2.6-2+deb10u1Fixed in 2.2.0-2+deb9u3
  16. Upgrade

    Upgrade tvOS to a version that resolves this vulnerability.

    Fixed in 13.3
  17. Upgrade

    Upgrade macOS Catalina to a version that resolves this vulnerability.

    Fixed in 10.15.2
  18. Upgrade

    Upgrade Apple iOS, iPadOS, and watchOS to a version that resolves this vulnerability.

    Fixed in 6.1.1
  19. Upgrade

    Upgrade Apple iCloud to a version that resolves this vulnerability.

    Fixed in 7.16
  20. Upgrade

    Upgrade Apple iCloud to a version that resolves this vulnerability.

    Fixed in 10.9
  21. Upgrade

    Upgrade Thunderbird to a version that resolves this vulnerability.

    Fixed in 68.2
  22. Upgrade

    Upgrade Firefox ESR to a version that resolves this vulnerability.

    Fixed in 68.2
  23. Upgrade

    Upgrade Firefox to a version that resolves this vulnerability.

    Fixed in 70
  24. Upgrade

    Upgrade iTunes to a version that resolves this vulnerability.

    Fixed in 12.10.3
  25. Upgrade

    Upgrade Apple iOS and iPadOS to a version that resolves this vulnerability.

    Fixed in 13.3
  26. Upgrade

    Upgrade Apple iOS, iPadOS, and macOS to a version that resolves this vulnerability.

    Fixed in 13.3
  27. Upgrade

    Upgrade redhat/expat to a version that resolves this vulnerability.

    Fixed in 2.2.8
  28. Upgrade

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

    Fixed in 68.2
  29. Upgrade

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

    Fixed in 68.2
  30. Upgrade

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

    Fixed in 150.0.7871.100-1~deb12u1Fixed in 155.0.8059.39-1~deb12u1Fixed in 150.0.7871.181-1~deb13u1Fixed in 155.0.8059.39-1~deb13u1Fixed in 154.0.8037.92-1Fixed in 155.0.8059.79-1
  31. Upgrade

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

    Fixed in 2.5.0-1+deb12u2Fixed in 2.5.0-1+deb12u4Fixed in 2.8.3-1~deb13u1Fixed in 2.9.0-1
  32. Upgrade

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

    Fixed in 157.0.1-1
  33. Upgrade

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

    Fixed in 140.12.0esr-1~deb12u1Fixed in 153.5.0esr-1~deb12u1Fixed in 140.15.0esr-1~deb13u1Fixed in 153.5.0esr-1~deb13u1Fixed in 153.4.0esr-1Fixed in 153.5.0esr-1
  34. Upgrade

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

    Fixed in 1:140.12.0esr-1~deb12u1Fixed in 1:140.17.0esr-1~deb12u1Fixed in 1:140.12.0esr-1~deb13u1Fixed in 1:140.17.0esr-1~deb13u1Fixed in 1:153.4.0esr-1
  35. Upgrade

    Upgrade libexpat to a version that resolves this vulnerability.

    Fixed in 2.2.8

Event History

Sep 4, 2019
CVE Published
12:00 AM
CVE Published
via MITRE·05:59 AM
Data Sourced
via MITRE·05:59 AM
Description
Data Sourced
via NVD·06:15 AM
RemedyDescriptionSeverityWeaknessAffected Software
Sep 16, 2019
Data Sourced
via Red Hat·05:52 PM
DescriptionSeverityAffected Software
Feb 20, 2026
Data Sourced
via Ubuntu·08:32 PM
RemedyDescriptionSeverityAffected Software
Data Sourced
via Launchpad·08:32 PM
Description
Oct 15, 2026
Data Sourced
via Debian·07:01 AM
DescriptionAffected Software

Parent advisories

This vulnerability appears in the following advisories.

Peer vulnerabilities

Found alongside the following vulnerabilities.

Frequently Asked Questions

1

What is CVE-2019-15903?

CVE-2019-15903 is a vulnerability in libexpat before version 2.2.8 that could result in a heap-based buffer over-read.

2

Which software products are affected by CVE-2019-15903?

Mozilla Firefox ESR versions up to 68.2, Mozilla Thunderbird versions up to 68.2, and Mozilla Firefox versions up to 70 are affected by CVE-2019-15903. Additionally, the expat package versions up to 2.2.8 are also affected.

3

What is the severity of CVE-2019-15903?

CVE-2019-15903 has a severity rating of high.

4

How can I fix CVE-2019-15903?

To fix CVE-2019-15903, update to expat version 2.2.8. For Mozilla products, update to the respective patched versions mentioned in the Mozilla security advisories.

5

Where can I find more information about CVE-2019-15903?

You can find more information about CVE-2019-15903 in the provided references: [1], [2], [3].

Company

Resources

Contact

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