Description
The getFirstInTableInstance function in the IcedTea-Web plugin before 1.2.1 returns an uninitialized pointer when the instance_to_id_map hash is empty, which allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via a crafted web page, which causes an uninitialized memory location to be read.
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 | icedtea-web | 1.3-1 | — |
| Debian 13 | icedtea-web | 1.3-1 | — |
| Debian 12 | icedtea-web | 1.3-1 | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 6 | icedtea-web +1 | 1.2.1-1.el6_3 | RHSA-2012:1132 |
Advisories 1
- RHSA-2012:1132 Red Hat Security Advisory: icedtea-web security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
References
- GLSA-201406-32 vendor-advisory
- http://icedtea.classpath.org/hg/release/icedtea-web-1.2/file/icedtea-web-1.2.1/NEWS
- https://bugzilla.redhat.com/show_bug.cgi?id=840592
- SUSE-SU-2013:0851 vendor-advisory
- USN-1521-1 vendor-advisory
- openSUSE-SU-2012:0982 vendor-advisory
- SUSE-SU-2013:1174 vendor-advisory
- openSUSE-SU-2013:0826 vendor-advisory
- openSUSE-SU-2012:0981 vendor-advisory
- SUSE-SU-2012:0979 vendor-advisory
- openSUSE-SU-2013:0966 vendor-advisory
- openSUSE-SU-2013:0893 vendor-advisory
- RHSA-2012:1132 vendor-advisory
- 50089 third-party-advisory