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CVE-2020-17468: AMNESIA:33 #58

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senier opened this issue Dec 23, 2020 · 0 comments
Open

CVE-2020-17468: AMNESIA:33 #58

senier opened this issue Dec 23, 2020 · 0 comments
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Denial of Service IPv6 Missing Length Check OSS Out-of-bounds Read

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senier commented Dec 23, 2020 •
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Description

The function that processes the IPv6 Hop-by-Hop extension header does not check the validity of its options lengths, allowing attackers to corrupt memory.

Root cause

An issue was discovered in FNET through 4.6.4. The code for processing the hop-by-hop header (in the IPv6 extension headers) doesn't check for a valid length of an extension header, and therefore an out-of-bounds read can occur in _fnet_ip6_ext_header_handler_options in fnet_ip6.c, leading to Denial-of-Service.

Software

Name

FNET

Versions affected

≤ 4.6.4

Links
@senier senier changed the title CVE-2020-17468: <Short name> CVE-2020-17468: AMNESIA:33 Dec 23, 2020
@senier senier added the OSS label Jan 29, 2021
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