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The unused and untested internal function ossl_a2ucompare() has been
removed.
Reviewed-by: Paul Dale <pauli@openssl.org>
Reviewed-by: Dmitry Belyavskiy <beldmit@gmail.com>
(Merged from https://github.com/openssl/openssl/pull/20177)
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Add test for `.' overflows, remove the output size argument from
ossl_a2ulabel() since it was never used and greatly complicated the code.
Convert ossl_a2ulabel() to use WPACKET for building the output string.
Update the documentation to match the new definition of ossl_a2ulabel().
x509: let punycode handle the '\0' string termination. Saves a memset(3)
and some size fiddling. Also update to deal with the modified parameters.
Reviewed-by: Tomas Mraz <tomas@openssl.org>
Reviewed-by: Dmitry Belyavskiy <beldmit@gmail.com>
(Merged from https://github.com/openssl/openssl/pull/19591)
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Fixed the ossl_a2ulabel() function which also contained a potential
buffer overflow, albeit without control of the contents.
This overflow could result in a crash (causing a denial of service).
The function also did not NUL-terminate the output in some cases.
The two issues fixed here were dentified and reported
by Viktor Dukhovni while researching CVE-2022-3602.
Reviewed-by: Matt Caswell <matt@openssl.org>
Reviewed-by: Tomas Mraz <tomas@openssl.org>
(cherry picked from commit c42165b5706e42f67ef8ef4c351a9a4c5d21639a)
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An off by one error in the punycode decoder allowed for a single unsigned int
overwrite of a buffer which could cause a crash and possible code execution.
Reviewed-by: Matt Caswell <matt@openssl.org>
Reviewed-by: Tomas Mraz <tomas@openssl.org>
(cherry picked from commit fe3b639dc19b325846f4f6801f2f4604f56e3de3)
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Reviewed-by: Paul Dale <pauli@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/15847)
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has literal prefix
Reviewed-by: Paul Dale <pauli@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/15847)
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Reviewed-by: Nicola Tuveri <nic.tuv@gmail.com>
(Merged from https://github.com/openssl/openssl/pull/13144)
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Reviewed-by: Richard Levitte <levitte@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/9654)
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