[3.11] gh-143935: Email preserve parens when folding comments (GH-143936)#144037
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…H-143936) Fix a bug in the folding of comments when flattening an email message using a modern email policy. Comments consisting of a very long sequence of non-foldable characters could trigger a forced line wrap that omitted the required leading space on the continuation line, causing the remainder of the comment to be interpreted as a new header field. This enabled header injection with carefully crafted inputs. (cherry picked from commit 17d1490) Co-authored-by: Seth Michael Larson <[email protected]> Co-authored-by: Denis Ledoux <[email protected]>
miss-islingtonforce-pushed the backport-17d1490-3.11 branch from c97350b to dfaeb01CompareSign up for freeto join this conversation on GitHub. Already have an account? Sign in to comment
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Fix a bug in the folding of comments when flattening an email message
using a modern email policy. Comments consisting of a very long sequence of
non-foldable characters could trigger a forced line wrap that omitted the
required leading space on the continuation line, causing the remainder of
the comment to be interpreted as a new header field. This enabled header
injection with carefully crafted inputs.
(cherry picked from commit 17d1490)
Co-authored-by: Seth Michael Larson [email protected]
Co-authored-by: Denis Ledoux [email protected]