MGASA-2020-0469

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Source
https://advisories.mageia.org/MGASA-2020-0469.html
Import Source
https://advisories.mageia.org/MGASA-2020-0469.json
JSON Data
https://api.osv.dev/v1/vulns/MGASA-2020-0469
Published
2020-12-21T21:47:06Z
Modified
2026-04-16T04:25:32Z
Summary
Updated mbedtls packages fix security vulnerabilities
Details

This update provides security bug fixes and minor enhancements.

Limit the size of calculations performed by mbedtls_mpi_exp_mod to MBEDTLS_MPI_MAX_SIZE to prevent a potential denial of service when generating Diffie-Hellman key pairs.

A failure of the random generator was ignored in mbedtls_mpi_fill_random(), which is how most uses of randomization in asymmetric cryptography are implemented. This could cause failures or the silent use of non-random values.

Fix a compliance issue whereby the library did not check the tag on the algorithm parameters (only the size) when comparing the signature in the description part of the cert to the real signature.

Zeroising of local buffers and variables which are used for calculations in mbedtls_pkcs5_pbkdf2_hmac(), mbedtls_internal_sha*_process(), mbedtls_internal_md*_process() and mbedtls_internal_ripemd160_process() functions to erase sensitive data from memory.

References
Credits

Affected packages

Mageia:7 / mbedtls

Package

Name
mbedtls
Purl
pkg:rpm/mageia/mbedtls?arch=source&distro=mageia-7

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
2.16.9-1.mga7

Ecosystem specific 

{
    "section": "core"
}

Database specific

source 
"https://advisories.mageia.org/MGASA-2020-0469.json"