wolfssl: CVE-2020-12457 CVE-2020-15309 CVE-2020-24585 CVE-2020-24613

Debian Bug report logs - #969663
wolfssl: CVE-2020-12457 CVE-2020-15309 CVE-2020-24585 CVE-2020-24613

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Message #5 received at submit@bugs.debian.org (full text, mbox, reply):

From: Salvatore Bonaccorso <carnil@debian.org>

To: Debian Bug Tracking System <submit@bugs.debian.org>

Subject: wolfssl: CVE-2020-12457 CVE-2020-15309 CVE-2020-24585 CVE-2020-24613

Date: Sun, 06 Sep 2020 21:12:42 +0200

Source: wolfssl
Version: 4.4.0+dfsg-7
Severity: grave
Tags: security upstream
Justification: user security hole
X-Debbugs-Cc: carnil@debian.org, Debian Security Team <team@security.debian.org>

Hi,

The following vulnerabilities were published for wolfssl.

CVE-2020-12457[0]:
| An issue was discovered in wolfSSL before 4.5.0. It mishandles the
| change_cipher_spec (CCS) message processing logic for TLS 1.3. If an
| attacker sends ChangeCipherSpec messages in a crafted way involving
| more than one in a row, the server becomes stuck in the ProcessReply()
| loop, i.e., a denial of service.


CVE-2020-15309[1]:
| An issue was discovered in wolfSSL before 4.5.0, when single precision
| is not employed. Local attackers can conduct a cache-timing attack
| against public key operations. These attackers may already have
| obtained sensitive information if the affected system has been used
| for private key operations (e.g., signing with a private key).


CVE-2020-24585[2]:
| An issue was discovered in the DTLS handshake implementation in
| wolfSSL before 4.5.0. Clear DTLS application_data messages in epoch 0
| do not produce an out-of-order error. Instead, these messages are
| returned to the application.


CVE-2020-24613[3]:
| wolfSSL before 4.5.0 mishandles TLS 1.3 server data in the
| WAIT_CERT_CR state, within SanityCheckTls13MsgReceived() in tls13.c.
| This is an incorrect implementation of the TLS 1.3 client state
| machine. This allows attackers in a privileged network position to
| completely impersonate any TLS 1.3 servers, and read or modify
| potentially sensitive information between clients using the wolfSSL
| library and these TLS servers.


If you fix the vulnerabilities please also make sure to include the
CVE (Common Vulnerabilities & Exposures) ids in your changelog entry.

For further information see:

[0] https://security-tracker.debian.org/tracker/CVE-2020-12457
    https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-12457
[1] https://security-tracker.debian.org/tracker/CVE-2020-15309
    https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-15309
[2] https://security-tracker.debian.org/tracker/CVE-2020-24585
    https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-24585
[3] https://security-tracker.debian.org/tracker/CVE-2020-24613
    https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-24613

Regards,
Salvatore

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