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CVE-2018-19759 #77

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saitoha opened this issue Dec 4, 2018 · 2 comments
Closed

CVE-2018-19759 #77

saitoha opened this issue Dec 4, 2018 · 2 comments

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@saitoha
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saitoha commented Dec 4, 2018

CVE-2018-19759
https://nvd.nist.gov/vuln/detail/CVE-2018-19759
https://bugzilla.redhat.com/show_bug.cgi?id=1649202
@knok
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knok commented Jul 30, 2019

It seems different behavor with/without -fsanitize=address option.
When sanitizer is enabled and using POC5 (attached in the bugzilla page):
https://github.com/saitoha/libsixel/blob/master/converters/malloc_stub.c#L45
malloc try to allcate with n = 11453255008 bytes. It seems too huge.
On the other hand, when sanitizer is disable the problem not happend.

@saitoha
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saitoha commented Dec 15, 2019

This problem is fixed on v1.9.3 including your fix(#98), Thanks.

@saitoha saitoha closed this as completed Dec 15, 2019
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@knok @saitoha