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RUSTSEC-2021-0027
No affected components available
Affected versions of bam set the length of an internal buffer using
self.compressed.set_len(block_size - HEADER_SIZE - MIN_EXTRA_SIZE) and then
wrote into it. While block_size was constrained to a proper maximum, when it
was too small the subtraction could overflow negatively to a large number past
the capacity of self.compressed.
This can result in memory corruption in the form of writing out of bounds when
loading a bgzip file with a small block_size.
Commit 061eee38d4 fixed this issue by checking for the underflow when setting
the buffer size.
The vulnerability can be exploited over the network without needing physical access. It is easy for an attacker to exploit this vulnerability. An attacker does not need any special privileges or access rights. No user interaction is needed for the attacker to exploit this vulnerability. The impact is confined to the system where the vulnerability exists. There is a high impact on the confidentiality of the information. There is a high impact on the integrity of the data. There is a high impact on the availability of the system.
Active exploitation in the wild has been confirmed. Immediate patching or mitigation is required.
Probability that this vulnerability will be exploited in the wild within the next 30 days.
We did not find any exploit available. Neither in GitHub repositories nor in the Exploit-Database.
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