Security Vulnerabilities - CVEs Published In August 2019
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.
CVSS Score
7.5
EPSS Score
0.045
Published
2019-08-13
PCManager 9.1.3.1 has an improper authentication vulnerability. The certain driver interface of the software does not perform a validation of user-mode data properly, successful exploit could result in malicious code execution.
CVSS Score
7.8
EPSS Score
0.003
Published
2019-08-13
The SIP TLS module of Huawei CloudLink Phone 7900 with V600R019C10 has a TLS certificate verification vulnerability. Due to insufficient verification of specific parameters of the TLS server certificate, attackers can perform man-in-the-middle attacks, leading to the affected phones registered abnormally, affecting the availability of IP phones.
CVSS Score
6.5
EPSS Score
0.001
Published
2019-08-13
Huawei mobile phones Hima-AL00Bhave with Versions earlier than HMA-AL00C00B175 have a signature verification bypass vulnerability. Attackers can induce users to install malicious applications. Due to a defect in the signature verification logic, the malicious applications can invoke specific interface to execute malicious code. A successful exploit may result in the execution of arbitrary code.
CVSS Score
7.8
EPSS Score
0.001
Published
2019-08-13
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.
CVSS Score
7.5
EPSS Score
0.153
Published
2019-08-13
Some HTTP/2 implementations are vulnerable to ping floods, potentially leading to a denial of service. The attacker sends continual pings to an HTTP/2 peer, causing the peer to build an internal queue of responses. Depending on how efficiently this data is queued, this can consume excess CPU, memory, or both.
CVSS Score
7.5
EPSS Score
0.179
Published
2019-08-13
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.
CVSS Score
7.5
EPSS Score
0.049
Published
2019-08-13
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.
CVSS Score
7.5
EPSS Score
0.088
Published
2019-08-13
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.
CVSS Score
7.5
EPSS Score
0.058
Published
2019-08-13
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.
CVSS Score
7.5
EPSS Score
0.026
Published
2019-08-13