opensuse-su-2021:0476-1
Vulnerability from csaf_opensuse
Published
2021-03-25 22:06
Modified
2021-03-25 22:06
Summary
Security update for openssl-1_1
Notes
Title of the patch
Security update for openssl-1_1
Description of the patch
This update for openssl-1_1 fixes the security issue:
* CVE-2021-3449: An OpenSSL TLS server may crash if sent a maliciously crafted
renegotiation ClientHello message from a client. If a TLSv1.2 renegotiation
ClientHello omits the signature_algorithms extension but includes a
signature_algorithms_cert extension, then a NULL pointer dereference will
result, leading to a crash and a denial of service attack. OpenSSL TLS
clients are not impacted by this issue. [bsc#1183852]
This update was imported from the SUSE:SLE-15-SP2:Update update project.
Patchnames
openSUSE-2021-476
Terms of use
CSAF 2.0 data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0).
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"text": "An OpenSSL TLS server may crash if sent a maliciously crafted renegotiation ClientHello message from a client. If a TLSv1.2 renegotiation ClientHello omits the signature_algorithms extension (where it was present in the initial ClientHello), but includes a signature_algorithms_cert extension then a NULL pointer dereference will result, leading to a crash and a denial of service attack. A server is only vulnerable if it has TLSv1.2 and renegotiation enabled (which is the default configuration). OpenSSL TLS clients are not impacted by this issue. All OpenSSL 1.1.1 versions are affected by this issue. Users of these versions should upgrade to OpenSSL 1.1.1k. OpenSSL 1.0.2 is not impacted by this issue. Fixed in OpenSSL 1.1.1k (Affected 1.1.1-1.1.1j).",
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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