45 points ledoge 1 hour ago 15 comments
paulpauper 1 hour ago | parent
it's like the weak hardware wallet entropy bug
jeffbee 59 minutes ago | parent
You'd have to be completely off your rocker to use a PDF tool written in C anyway.
lirolero 49 minutes ago | parent
Genuine question, since I'm not very knowledgeable about this: why is using C for a PDF tool such a bad idea?
recursive 6 minutes ago | parent
buffer overflow vulnerability in code dealing with user generated data and a complex file format.
tptacek 5 minutes ago | parent
I think the claim is hyperbolic, since most people memory-unsafe PDF implementations, but PDF is a monster format, a metaformat that brings in virtually every conceivable display format, and their renderer implementations with them, often poorly-maintained, never-touched reference implementations from the before times. PDF is pretty scary.
cowlevel 44 minutes ago | parent
What are the alternatives?
advisedwang 36 minutes ago | parent
very VERY few people judge tools like this by the language used to develop them.
JonChesterfield 32 minutes ago | parent
Wonderful.
tptacek 7 minutes ago | parent
"MuPDF versions before 1.28.5 use an implementation of the drand48 family" yeah, ok, so they're basically not doing real encryption. The number of bits in the key space isn't the real story; the keys simply aren't cryptographically random.