CVE-2019-1808

Cisco NX-OS Software’s Image Signature Verification feature is vulnerable to an in-vehicle issue where an authenticated, local attacker with administrator-level credentials can load an unsigned patch image and boot a malicious software patch. The root cause is improper verification of digital sig...

CVE-2019-1809 Cisco NX-OS Software Patch Signature Verification Bypass Vulnerability

A vulnerability in the Image Signature Verification feature of Cisco NX-OS Software could allow an authenticated, local attacker with administrator-level credentials to install a malicious software patch on an affected device. The vulnerability is due to improper verification of digital signature...

CVE-2019-1809 Cisco NX-OS Software Patch Signature Verification Bypass Vulnerability

A vulnerability in the Image Signature Verification feature of Cisco NX-OS Software could allow an authenticated, local attacker with administrator-level credentials to install a malicious software patch on an affected device. The vulnerability is due to improper verification of digital signature...

CVE-2019-1809

CVE-2019-1809 affects Cisco NX-OS Software. The vulnerability lies in the Image Signature Verification feature, due to improper verification of digital signatures for patch images. An authenticated, local attacker with administrator-level credentials could craft and load an unsigned patch, bypass...

CVE-2019-1810 Cisco Nexus 3000 Series and 9000 Series Switches in NX-OS Mode CLI Command Software Image Signature Verification Vulnerability

A vulnerability in the Image Signature Verification feature used in an NX-OS CLI command in Cisco Nexus 3000 Series and 9000 Series Switches could allow an authenticated, local attacker with administrator-level credentials to install a malicious software image on an affected device. The...

CVE-2019-1810

CVE-2019-1810 affects Cisco Nexus 3000/9000 NX-OS: the Image Signature Verification in an NX-OS CLI command fails to properly verify software signatures during command execution, enabling an authenticated, local attacker with administrator credentials to install an unsigned image. The issue stems...

Cisco MDS 9700 Series Multilayer Directors and Nexus 7000/7700 Series Switches Software Patch Signature Verification Vulnerability

A vulnerability in the Image Signature Verification feature of Cisco NX-OS Software could allow an authenticated, local attacker with administrator-level credentials to install a malicious software patch on an affected device. The vulnerability is due to improper verification of digital signature...

Cisco Nexus 3000 Series and 9000 Series Switches in NX-OS Mode CLI Command Software Image Signature Verification Vulnerability

A vulnerability in the Image Signature Verification feature used in an NX-OS CLI command in Cisco Nexus 3000 Series and 9000 Series Switches could allow an authenticated, local attacker with administrator-level credentials to install a malicious software image on an affected device. The...

Cisco NX-OS CLI Command Software Image Signature Verification Vulnerabilities

Multiple vulnerabilities in the Image Signature Verification feature of Cisco NX-OS Software could allow an authenticated, local attacker with administrator-level credentials to install a malicious software image on an affected device. The vulnerabilities exist because software digital signatures...

PT-2019-2211 · Cisco · Cisco Nx-Os +1

Name of the Vulnerable Software and Affected Versions: Cisco NX-OS Software affected versions not specified Description: A vulnerability in the Image Signature Verification feature could allow an authenticated, local attacker with administrator-level credentials to install a malicious software...

Cisco NX-OS Software Data Forgery Issue Vulnerability

Cisco NX-OS Software is a set of data center-grade operating system software for switches from the U.S. company Cisco Cisco. A data forgery vulnerability exists in the Image Signature Verification feature in Cisco NX-OS Software. The vulnerability arises from a network system or product that does...

Cisco NX-OS Software Data Forgery Issue Vulnerability (CNVD-2019-14715)

Cisco NX-OS Software is a set of data center-grade operating system software for switches from the U.S. company Cisco Cisco. A data forgery vulnerability exists in the Image Signature Verification feature in Cisco NX-OS Software. The vulnerability arises from a network system or product that does...

PT-2019-2213 · Cisco · Cisco Nx-Os +1

Name of the Vulnerable Software and Affected Versions: Cisco NX-OS Software affected versions not specified Description: A vulnerability in the Image Signature Verification feature could allow an authenticated, local attacker with administrator-level credentials to install a malicious software...

PT-2019-2215 · Cisco · Cisco Nexus 3000 Series +3

Name of the Vulnerable Software and Affected Versions: Cisco Nexus 3000 Series and 9000 Series Switches affected versions not specified Description: A vulnerability in the Image Signature Verification feature used in an NX-OS CLI command could allow an authenticated, local attacker with...

PT-2019-2415 · Cisco · Cisco Nx-Os +1

Name of the Vulnerable Software and Affected Versions: Cisco NX-OS Software affected versions not specified Description: A vulnerability in the Image Signature Verification feature could allow an authenticated, local attacker with administrator-level credentials to install a malicious software...

PT-2019-2212 · Cisco · Cisco Nx-Os +1

Name of the Vulnerable Software and Affected Versions: Cisco NX-OS Software affected versions not specified Description: The issue is related to incorrect verification of cryptographic signatures in the Image Signature Verification feature of Cisco NX-OS Software. This could allow an authenticate...

PT-2019-2214 · Cisco · Cisco Nx-Os +1

Name of the Vulnerable Software and Affected Versions: Cisco NX-OS Software affected versions not specified Description: The issue is related to incorrect verification of cryptographic signatures in the Image Signature Verification feature of Cisco NX-OS Software. This could allow an authenticate...

Signature Verification Bypass

Linux kernel is vulnerable to signature validation bypass attacks. This is because the root can gain direct access to an internal keyring, such as '.dnsresolver' in RHEL-7 or '.builtintrustedkeys' upstream, by joining it as its session keyring.Root user could bypass module signature verification ...

Over Dozen Popular Email Clients Found Vulnerable to Signature Spoofing Attacks

A team of security researchers has discovered several vulnerabilities in various implementations of OpenPGP and S/MIME email signature verification that could allow attackers to spoof signatures on over a dozen of popular email clients. The affected email clients include Thunderbird, Microsoft...

Code injection

A flaw during verification of certain S/MIME signatures causes emails to be shown in Thunderbird as having a valid digital signature, even if the shown message contents aren't covered by the signature. The flaw allows an attacker to reuse a valid S/MIME signature to craft an email message with...