A URL redirection vulnerability in Skyhigh SWG in main releases 10.x prior to 10.2.9, 9.x prior to 9.2.20, 8.x prior to 8.2.27, and 7.x prior to 7.8.2.31, and controlled release 11.x prior to 11.1.3 allows a remote attacker to redirect a user to a malicious website controlled by the attacker. This is possible because SWG incorrectly creates a HTTP redirect response when a user clicks a carefully constructed URL. Following the redirect response, the new request is still filtered by the SWG policy.
Max CVSS
6.1
EPSS Score
0.12%
Published
2022-04-20
Updated
2023-11-16
Privilege escalation vulnerability in McAfee Web Gateway (MWG) prior to 9.2.8 allows an authenticated user to gain elevated privileges through the User Interface and execute commands on the appliance via incorrect improper neutralization of user input in the troubleshooting page.
Max CVSS
9.0
EPSS Score
0.09%
Published
2021-02-17
Updated
2022-04-26
The X509_V_FLAG_X509_STRICT flag enables additional security checks of the certificates present in a certificate chain. It is not set by default. Starting from OpenSSL version 1.1.1h a check to disallow certificates in the chain that have explicitly encoded elliptic curve parameters was added as an additional strict check. An error in the implementation of this check meant that the result of a previous check to confirm that certificates in the chain are valid CA certificates was overwritten. This effectively bypasses the check that non-CA certificates must not be able to issue other certificates. If a "purpose" has been configured then there is a subsequent opportunity for checks that the certificate is a valid CA. All of the named "purpose" values implemented in libcrypto perform this check. Therefore, where a purpose is set the certificate chain will still be rejected even when the strict flag has been used. A purpose is set by default in libssl client and server certificate verification routines, but it can be overridden or removed by an application. In order to be affected, an application must explicitly set the X509_V_FLAG_X509_STRICT verification flag and either not set a purpose for the certificate verification or, in the case of TLS client or server applications, override the default purpose. OpenSSL versions 1.1.1h and newer 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 1.1.1h-1.1.1j).
Max CVSS
7.4
EPSS Score
0.26%
Published
2021-03-25
Updated
2023-08-04
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).
Max CVSS
5.9
EPSS Score
0.33%
Published
2021-03-25
Updated
2022-08-29

CVE-2021-3156

Known exploited
Public exploit
Sudo before 1.9.5p2 contains an off-by-one error that can result in a heap-based buffer overflow, which allows privilege escalation to root via "sudoedit -s" and a command-line argument that ends with a single backslash character.
Max CVSS
7.8
EPSS Score
97.09%
Published
2021-01-26
Updated
2024-02-04
CISA KEV Added
2022-04-06
Privilege Escalation vulnerability in McAfee Web Gateway (MWG) prior to 9.2.1 allows authenticated user interface user to access protected dashboard data via improper access control in the user interface.
Max CVSS
5.7
EPSS Score
0.04%
Published
2020-09-16
Updated
2022-07-01
Privilege Escalation vulnerability in McAfee Web Gateway (MWG) prior to 9.2.1 allows authenticated user interface user to access protected configuration files via improper access control in the user interface.
Max CVSS
5.7
EPSS Score
0.04%
Published
2020-09-15
Updated
2022-01-06
Privilege Escalation vulnerability in McAfee Web Gateway (MWG) prior to 9.2.1 allows authenticated user interface user to delete or download protected log data via improper access controls in the user interface.
Max CVSS
4.6
EPSS Score
0.04%
Published
2020-09-15
Updated
2022-01-06
Privilege Escalation vulnerability in McAfee Web Gateway (MWG) prior to 9.2.1 allows authenticated user interface user to delete or download protected files via improper access controls in the REST interface.
Max CVSS
4.6
EPSS Score
0.04%
Published
2020-09-15
Updated
2022-01-01
Privilege Escalation vulnerability in McAfee Web Gateway (MWG) prior to 9.2.1 allows authenticated user interface user with low permissions to change the system's root password via improper access controls in the user interface.
Max CVSS
9.0
EPSS Score
0.04%
Published
2020-09-15
Updated
2022-01-06
Inappropriate Encoding for output context vulnerability in McAfee Web Gateway (MWG) prior to 9.2.1 allows a remote attacker to cause MWG to return an ambiguous redirect response via getting a user to click on a malicious URL.
Max CVSS
4.3
EPSS Score
0.14%
Published
2020-07-15
Updated
2020-09-17
Some HTTP/2 implementations are vulnerable to a flood of empty frames, potentially leading to a denial of service. The attacker sends a stream of frames with an empty payload and without the end-of-stream flag. These frames can be DATA, HEADERS, CONTINUATION and/or PUSH_PROMISE. The peer spends time processing each frame disproportionate to attack bandwidth. This can consume excess CPU.
Max CVSS
7.8
EPSS Score
1.38%
Published
2019-08-13
Updated
2022-08-12
Some HTTP/2 implementations are vulnerable to unconstrained interal data buffering, potentially leading to a denial of service. The attacker opens the HTTP/2 window so the peer can send without constraint; however, they leave the TCP window closed so the peer cannot actually write (many of) the bytes on the wire. The attacker then sends a stream of requests for a large response object. Depending on how the servers queue the responses, this can consume excess memory, CPU, or both.
Max CVSS
7.8
EPSS Score
3.56%
Published
2019-08-13
Updated
2023-01-19
Some HTTP/2 implementations are vulnerable to a header leak, potentially leading to a denial of service. The attacker sends a stream of headers with a 0-length header name and 0-length header value, optionally Huffman encoded into 1-byte or greater headers. Some implementations allocate memory for these headers and keep the allocation alive until the session dies. This can consume excess memory.
Max CVSS
7.5
EPSS Score
0.66%
Published
2019-08-13
Updated
2022-08-05
Some HTTP/2 implementations are vulnerable to a settings flood, potentially leading to a denial of service. The attacker sends a stream of SETTINGS frames to the peer. Since the RFC requires that the peer reply with one acknowledgement per SETTINGS frame, an empty SETTINGS frame is almost equivalent in behavior to a ping. Depending on how efficiently this data is queued, this can consume excess CPU, memory, or both.
Max CVSS
7.8
EPSS Score
4.92%
Published
2019-08-13
Updated
2022-08-12
Some HTTP/2 implementations are vulnerable to a reset flood, potentially leading to a denial of service. The attacker opens a number of streams and sends an invalid request over each stream that should solicit a stream of RST_STREAM frames from the peer. Depending on how the peer queues the RST_STREAM frames, this can consume excess memory, CPU, or both.
Max CVSS
7.8
EPSS Score
82.06%
Published
2019-08-13
Updated
2023-10-19
Some HTTP/2 implementations are vulnerable to resource loops, potentially leading to a denial of service. The attacker creates multiple request streams and continually shuffles the priority of the streams in a way that causes substantial churn to the priority tree. This can consume excess CPU.
Max CVSS
7.8
EPSS Score
5.38%
Published
2019-08-13
Updated
2022-08-12
Some HTTP/2 implementations are vulnerable to window size manipulation and stream prioritization manipulation, potentially leading to a denial of service. The attacker requests a large amount of data from a specified resource over multiple streams. They manipulate window size and stream priority to force the server to queue the data in 1-byte chunks. Depending on how efficiently this data is queued, this can consume excess CPU, memory, or both.
Max CVSS
7.8
EPSS Score
9.69%
Published
2019-08-13
Updated
2022-08-12
In the GNU C Library (aka glibc or libc6) through 2.29, proceed_next_node in posix/regexec.c has a heap-based buffer over-read via an attempted case-insensitive regular-expression match.
Max CVSS
9.8
EPSS Score
0.38%
Published
2019-02-26
Updated
2022-06-13
An issue was discovered in sd-bus in systemd 239. bus_process_object() in libsystemd/sd-bus/bus-objects.c allocates a variable-length stack buffer for temporarily storing the object path of incoming D-Bus messages. An unprivileged local user can exploit this by sending a specially crafted message to PID1, causing the stack pointer to jump over the stack guard pages into an unmapped memory region and trigger a denial of service (systemd PID1 crash and kernel panic).
Max CVSS
5.5
EPSS Score
0.04%
Published
2019-03-21
Updated
2022-02-20
McAfee Web Gateway (MWG) earlier than 7.8.2.13 is vulnerable to a remote attacker exploiting CVE-2019-9517, potentially leading to a denial of service. This affects the scanning proxies.
Max CVSS
7.5
EPSS Score
0.22%
Published
2019-09-11
Updated
2022-03-31
McAfee Web Gateway (MWG) earlier than 7.8.2.13 is vulnerable to a remote attacker exploiting CVE-2019-9511, potentially leading to a denial of service. This affects the scanning proxies.
Max CVSS
7.5
EPSS Score
0.22%
Published
2019-09-11
Updated
2022-04-18
Clickjack vulnerability in Adminstrator web console in McAfee Web Gateway (MWG) 7.8.2.x prior to 7.8.2.12 allows remote attackers to conduct clickjacking attacks via a crafted web page that contains an iframe via does not send an X-Frame-Options HTTP header.
Max CVSS
7.1
EPSS Score
0.41%
Published
2019-08-14
Updated
2020-08-24
Reflected Cross Site Scripting vulnerability in Administrators web console in McAfee Web Gateway (MWG) 7.8.x prior to 7.8.2.13 allows remote attackers to collect sensitive information or execute commands with the MWG administrator's credentials via tricking the administrator to click on a carefully constructed malicious link.
Max CVSS
9.6
EPSS Score
0.68%
Published
2019-09-12
Updated
2022-12-13
Exfiltration of Data in McAfee Web Gateway (MWG) 7.8.2.x prior to 7.8.2.12 allows attackers to obtain sensitive data via crafting a complex webpage that will trigger the Web Gateway to block the user accessing an iframe.
Max CVSS
6.5
EPSS Score
0.16%
Published
2019-08-14
Updated
2022-12-13
41 vulnerabilities found
1 2
This web site uses cookies for managing your session, storing preferences, website analytics and additional purposes described in our privacy policy.
By using this web site you are agreeing to CVEdetails.com terms of use!