Описание
The xz_decomp function in xzlib.c in libxml2 2.9.8, if --with-lzma is used, allows remote attackers to cause a denial of service (infinite loop) via a crafted XML file that triggers LZMA_MEMLIMIT_ERROR, as demonstrated by xmllint, a different vulnerability than CVE-2015-8035.
Пакеты
| Пакет | Статус | Версия исправления | Релиз | Тип |
|---|---|---|---|---|
| libxml2 | not-affected | package |
Примечания
https://bugzilla.gnome.org/show_bug.cgi?id=794914
Fixed by: https://gitlab.gnome.org/GNOME/libxml2/commit/2240fbf5912054af025fb6e01e26375100275e74
Before upstream commit https://gitlab.gnome.org/GNOME/libxml2/-/commit/e2a9122b8dde53d320750451e9907a7dcb2ca8bb
the memlimit argument to lzma_auto_decoder was set to UINT64_MAX, possibly
allowing a malicious LZMA compressed files to consume large amounts of memory
when decompressed. Setting memlimit to UINT64_MAX the limiter is effectively
disabled and "lzma_auto_decoder(&state->strm, UINT64_MAX, 0)" can never result
in LZMA_MEMLIMIT_ERROR outcome because there is no way to exceed UINT64_MAX.
Thus CVE-2018-9251 is only affecting libxml2 if e2a9122b8dde53d320750451e9907a7dcb2ca8bb
is applied.
EPSS
Связанные уязвимости
The xz_decomp function in xzlib.c in libxml2 2.9.8, if --with-lzma is used, allows remote attackers to cause a denial of service (infinite loop) via a crafted XML file that triggers LZMA_MEMLIMIT_ERROR, as demonstrated by xmllint, a different vulnerability than CVE-2015-8035.
The xz_decomp function in xzlib.c in libxml2 2.9.8, if --with-lzma is used, allows remote attackers to cause a denial of service (infinite loop) via a crafted XML file that triggers LZMA_MEMLIMIT_ERROR, as demonstrated by xmllint, a different vulnerability than CVE-2015-8035.
The xz_decomp function in xzlib.c in libxml2 2.9.8, if --with-lzma is used, allows remote attackers to cause a denial of service (infinite loop) via a crafted XML file that triggers LZMA_MEMLIMIT_ERROR, as demonstrated by xmllint, a different vulnerability than CVE-2015-8035.
The xz_decomp function in xzlib.c in libxml2 2.9.8, if --with-lzma is used, allows remote attackers to cause a denial of service (infinite loop) via a crafted XML file that triggers LZMA_MEMLIMIT_ERROR, as demonstrated by xmllint, a different vulnerability than CVE-2015-8035.
Уязвимость функции xz_decomp библиотеки libxml2, позволяющая нарушителю вызвать отказ в обслуживании
EPSS