GoogleOSV:GHSA-83MX-573X-5RW9openssl-src NULL pointer Dereference in signature_algorithms processing
EPSS
Percentile
76.4%
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).
References
www.openwall.com/lists/oss-security/2021/03/27/1
www.openwall.com/lists/oss-security/2021/03/27/2
www.openwall.com/lists/oss-security/2021/03/28/3
www.openwall.com/lists/oss-security/2021/03/28/4
cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf
cert-portal.siemens.com/productcert/pdf/ssa-772220.pdf
git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=fb9fa6b51defd48157eeb207f52181f735d96148
github.com/alexcrichton/openssl-src-rs
kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA44845
kc.mcafee.com/corporate/index?page=content&id=SB10356
lists.debian.org/debian-lts-announce/2021/08/msg00029.html
lists.fedoraproject.org/archives/list/[email protected]/message/CCBFLLVQVILIVGZMBJL3IXZGKWQISYNP
nvd.nist.gov/vuln/detail/CVE-2021-3449
psirt.global.sonicwall.com/vuln-detail/SNWLID-2021-0013
rustsec.org/advisories/RUSTSEC-2021-0055
rustsec.org/advisories/RUSTSEC-2021-0055.html
security.FreeBSD.org/advisories/FreeBSD-SA-21:07.openssl.asc
security.gentoo.org/glsa/202103-03
security.netapp.com/advisory/ntap-20210326-0006
security.netapp.com/advisory/ntap-20210513-0002
tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-openssl-2021-GHY28dJd
www.debian.org/security/2021/dsa-4875
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www.oracle.com//security-alerts/cpujul2021.html
www.oracle.com/security-alerts/cpuApr2021.html
www.oracle.com/security-alerts/cpuapr2022.html
www.oracle.com/security-alerts/cpujul2022.html
www.oracle.com/security-alerts/cpuoct2021.html
www.tenable.com/security/tns-2021-05
www.tenable.com/security/tns-2021-06
www.tenable.com/security/tns-2021-09
www.tenable.com/security/tns-2021-10
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