CVE-2017-17688

DISPUTED The OpenPGP specification allows a Cipher Feedback Mode CFB malleability-gadget attack that can indirectly lead to plaintext exfiltration, aka EFAIL. NOTE: third parties report that this is a problem in applications that mishandle the Modification Detection Code MDC feature or accept an...

Updated python-ecdsa packages fix security vulnerabilities

Updated python-ecdsa packages fix security vulnerabilities: It was discovered that python-ecdsa incorrectly handled certain signatures. A remote attacker could possibly use this issue to cause python-ecdsa to generate unexpected exceptions, resulting in a denial of service CVE-2019-14853. It was...

MGASA-2020-0002 Updated python-ecdsa packages fix security vulnerabilities

Updated python-ecdsa packages fix security vulnerabilities: It was discovered that python-ecdsa incorrectly handled certain signatures. A remote attacker could possibly use this issue to cause python-ecdsa to generate unexpected exceptions, resulting in a denial of service CVE-2019-14853. It was...

DEBIAN-CVE-2019-14859

A flaw was found in all python-ecdsa versions before 0.13.3, where it did not correctly verify whether signatures used DER encoding. Without this verification, a malformed signature could be accepted, making the signature malleable. Without proper verification, an attacker could use a malleable...

PYSEC-2020-182

A flaw was found in all python-ecdsa versions before 0.13.3, where it did not correctly verify whether signatures used DER encoding. Without this verification, a malformed signature could be accepted, making the signature malleable. Without proper verification, an attacker could use a malleable...

PYSEC-2020-163

A flaw was found in all python-ecdsa versions before 0.13.3, where it did not correctly verify whether signatures used DER encoding. Without this verification, a malformed signature could be accepted, making the signature malleable. Without proper verification, an attacker could use a malleable...

CVE-2019-14859

CVE-2019-14859 affects the Python library python-ecdsa. A flaw exists in all versions before 0.13.3 where signatures are not properly verified for DER encoding, allowing a malformed signature to be accepted and making signatures malleable. This could enable an attacker to use a malleable signatur...

SUSE-SU-2019:3024-1 Security update for python-ecdsa

This update for python-ecdsa to version 0.13.3 fixes the following issues: Security issues fixed: - CVE-2019-14853: Fixed unexpected exceptions during signature decoding bsc1153165. - CVE-2019-14859: Fixed a signature malleability caused by insufficient checks of DER encoding bsc1154217...

Ubuntu 16.04 LTS / 18.04 LTS : python-ecdsa vulnerabilities (USN-4196-1)

The remote Ubuntu 16.04 LTS / 18.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-4196-1 advisory. It was discovered that python-ecdsa incorrectly handled certain signatures. A remote attacker could possibly use this issue to cause...

USN-4196-1: python-ecdsa vulnerabilities

It was discovered that python-ecdsa incorrectly handled certain signatures. A remote attacker could possibly use this issue to cause python-ecdsa to generate unexpected exceptions, resulting in a denial of service. CVE-2019-14853 It was discovered that python-ecdsa incorrectly verified DER encodi...

USN-4196-1 python-ecdsa vulnerabilities

It was discovered that python-ecdsa incorrectly handled certain signatures. A remote attacker could possibly use this issue to cause python-ecdsa to generate unexpected exceptions, resulting in a denial of service. CVE-2019-14853 It was discovered that python-ecdsa incorrectly verified DER encodi...

Security update for python-ecdsa (moderate)

openSUSE Security Update: Security update for python-ecdsa Announcement ID: openSUSE-SU-2019:2474-1 Rating: moderate References: 1153165 1154217 Cross-References: CVE-2019-14853 CVE-2019-14859 Affected Products: openSUSE Leap 15.1 An update that fixes two vulnerabilities is now...

OPENSUSE-SU-2019:2474-1 Security update for python-ecdsa

This update for python-ecdsa to version 0.13.3 fixes the following issues: Security issues fixed: - CVE-2019-14853: Fixed unexpected exceptions during signature decoding bsc1153165. - CVE-2019-14859: Fixed a signature malleability caused by insufficient checks of DER encoding bsc1154217. This...

OPENSUSE-SU-2019:2472-1 Security update for python-ecdsa

This update for python-ecdsa to version 0.13.3 fixes the following issues: Security issues fixed: - CVE-2019-14853: Fixed unexpected exceptions during signature decoding bsc1153165. - CVE-2019-14859: Fixed a signature malleability caused by insufficient checks of DER encoding bsc1154217. This...

SUSE-SU-2019:2891-1 Security update for python-ecdsa

This update for python-ecdsa to version 0.13.3 fixes the following issues: Security issues fixed: - CVE-2019-14853: Fixed unexpected exceptions during signature decoding bsc1153165. - CVE-2019-14859: Fixed a signature malleability caused by insufficient checks of DER encoding bsc1154217...

UBUNTU-CVE-2019-14859

A flaw was found in all python-ecdsa versions before 0.13.3, where it did not correctly verify whether signatures used DER encoding. Without this verification, a malformed signature could be accepted, making the signature malleable. Without proper verification, an attacker could use a malleable...

GHSA-PWFW-MGFJ-7G3G ecdsa Denial of Service vulnerability in signature verification and signature malleability

possible DoS in signature verification and signature malleability Impact Code using VerifyingKey.verify and VerifyingKey.verifydigest may receive exceptions other than the documented BadSignatureError when signatures are malformed. If those other exceptions are not caught, they may lead to progra...

ecdsa Denial of Service vulnerability in signature verification and signature malleability

possible DoS in signature verification and signature malleability Impact Code using VerifyingKey.verify and VerifyingKey.verifydigest may receive exceptions other than the documented BadSignatureError when signatures are malformed. If those other exceptions are not caught, they may lead to progra...

security/py-ecdsa -- multiple issues

py-ecdsa developers report: Fix CVE-2019-14853 - possible DoS caused by malformed signature decoding. Fix CVE-2019-14859 - signature malleability caused by insufficient checks of DER encoding...

Design/Logic Flaw

When handling a SSLv2-compatible ClientHello request, the server doesn't generate a new random value but sends an all-zero value instead. This results in full malleability of the ClientHello for SSLv2 used for TLS 1.2 in all versions prior to NSS 3.39. This does not impact TLS 1.3...