CWE-385
Covert Timing Channel
Covert timing channels convey information by modulating some aspect of system behavior over time, so that the program receiving the information can observe system behavior and infer protected information.
CVE-2016-7056 (GCVE-0-2016-7056)
Vulnerability from cvelistv5
Published
2018-09-10 16:00
Modified
2024-08-06 01:50
Severity ?
VLAI Severity ?
EPSS score ?
CWE
Summary
A timing attack flaw was found in OpenSSL 1.0.1u and before that could allow a malicious user with local access to recover ECDSA P-256 private keys.
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| The OpenSSL Project | openssl |
Version: openssl 1.0.1u |
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CVE-2017-2624 (GCVE-0-2017-2624)
Vulnerability from cvelistv5
Published
2018-07-27 18:00
Modified
2024-08-05 14:02
Severity ?
VLAI Severity ?
EPSS score ?
CWE
Summary
It was found that xorg-x11-server before 1.19.0 including uses memcmp() to check the received MIT cookie against a series of valid cookies. If the cookie is correct, it is allowed to attach to the Xorg session. Since most memcmp() implementations return after an invalid byte is seen, this causes a time difference between a valid and invalid byte, which could allow an efficient brute force attack.
References
| ► | URL | Tags | ||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
||||||||||||||||||||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Xorg | xorg-x11-server |
Version: 1.19.0 |
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CVE-2018-10844 (GCVE-0-2018-10844)
Vulnerability from cvelistv5
Published
2018-08-22 13:00
Modified
2024-08-05 07:46
Severity ?
VLAI Severity ?
EPSS score ?
CWE
Summary
It was found that the GnuTLS implementation of HMAC-SHA-256 was vulnerable to a Lucky thirteen style attack. Remote attackers could use this flaw to conduct distinguishing attacks and plaintext-recovery attacks via statistical analysis of timing data using crafted packets.
References
| ► | URL | Tags | ||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
||||||||||||||||||||||||||||||||
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CVE-2018-10845 (GCVE-0-2018-10845)
Vulnerability from cvelistv5
Published
2018-08-22 13:00
Modified
2024-08-05 07:46
Severity ?
VLAI Severity ?
EPSS score ?
CWE
Summary
It was found that the GnuTLS implementation of HMAC-SHA-384 was vulnerable to a Lucky thirteen style attack. Remote attackers could use this flaw to conduct distinguishing attacks and plain text recovery attacks via statistical analysis of timing data using crafted packets.
References
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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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CVE-2018-10846 (GCVE-0-2018-10846)
Vulnerability from cvelistv5
Published
2018-08-22 13:00
Modified
2024-08-05 07:46
Severity ?
VLAI Severity ?
EPSS score ?
CWE
Summary
A cache-based side channel in GnuTLS implementation that leads to plain text recovery in cross-VM attack setting was found. An attacker could use a combination of "Just in Time" Prime+probe attack in combination with Lucky-13 attack to recover plain text using crafted packets.
References
| ► | URL | Tags | ||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
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CVE-2019-19338 (GCVE-0-2019-19338)
Vulnerability from cvelistv5
Published
2020-07-13 16:04
Modified
2024-08-05 02:16
Severity ?
VLAI Severity ?
EPSS score ?
Summary
A flaw was found in the fix for CVE-2019-11135, in the Linux upstream kernel versions before 5.5 where, the way Intel CPUs handle speculative execution of instructions when a TSX Asynchronous Abort (TAA) error occurs. When a guest is running on a host CPU affected by the TAA flaw (TAA_NO=0), but is not affected by the MDS issue (MDS_NO=1), the guest was to clear the affected buffers by using a VERW instruction mechanism. But when the MDS_NO=1 bit was exported to the guests, the guests did not use the VERW mechanism to clear the affected buffers. This issue affects guests running on Cascade Lake CPUs and requires that host has 'TSX' enabled. Confidentiality of data is the highest threat associated with this vulnerability.
References
| ► | URL | Tags | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
|
|||||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| [UNKNOWN] | Linux Kernel |
Version: before 5.5 |
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CVE-2019-3732 (GCVE-0-2019-3732)
Vulnerability from cvelistv5
Published
2019-09-30 21:48
Modified
2024-09-16 16:37
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-385 - Covert Timing Channel
Summary
RSA BSAFE Crypto-C Micro Edition, versions prior to 4.0.5.3 (in 4.0.x) and versions prior to 4.1.3.3 (in 4.1.x), and RSA Micro Edition Suite, versions prior to 4.0.11 (in 4.0.x) versions prior to 4.1.6.1 (in 4.1.x) and versions prior to 4.3.3 (4.2.x and 4.3.x) are vulnerable to an Information Exposure Through Timing Discrepancy. A malicious remote user could potentially exploit this vulnerability to extract information leaving data at risk of exposure.
References
| ► | URL | Tags | |||
|---|---|---|---|---|---|
|
|||||
Impacted products
| Vendor | Product | Version | |||||||
|---|---|---|---|---|---|---|---|---|---|
| ► | Dell | RSA BSAFE Crypto-C Micro Edition |
Version: unspecified < 4.1.4 |
||||||
|
|||||||||
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CVE-2020-14341 (GCVE-0-2020-14341)
Vulnerability from cvelistv5
Published
2021-01-12 14:23
Modified
2024-08-04 12:39
Severity ?
VLAI Severity ?
EPSS score ?
CWE
Summary
The "Test Connection" available in v7.x of the Red Hat Single Sign On application console can permit an authorized user to cause SMTP connections to be attempted to arbitrary hosts and ports of the user's choosing, and originating from the RHSSO installation. By observing differences in the timings of these scans, an attacker may glean information about hosts and ports which they do not have access to scan directly.
References
| ► | URL | Tags | |||
|---|---|---|---|---|---|
|
|||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Red Hat | Red Hat Single Sign-On |
Version: v7.x |
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CVE-2020-25657 (GCVE-0-2020-25657)
Vulnerability from cvelistv5
Published
2021-01-12 14:33
Modified
2024-08-04 15:40
Severity ?
VLAI Severity ?
EPSS score ?
CWE
Summary
A flaw was found in all released versions of m2crypto, where they are vulnerable to Bleichenbacher timing attacks in the RSA decryption API via the timed processing of valid PKCS#1 v1.5 Ciphertext. The highest threat from this vulnerability is to confidentiality.
References
| ► | URL | Tags | |||
|---|---|---|---|---|---|
|
|||||
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CVE-2020-25658 (GCVE-0-2020-25658)
Vulnerability from cvelistv5
Published
2020-11-12 13:48
Modified
2024-08-04 15:40
Severity ?
VLAI Severity ?
EPSS score ?
CWE
Summary
It was found that python-rsa is vulnerable to Bleichenbacher timing attacks. An attacker can use this flaw via the RSA decryption API to decrypt parts of the cipher text encrypted with RSA.
References
| ► | URL | Tags | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
|||||||||||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Sybren A. Stüvel | python-rsa |
Version: after 3.0 (inclusive) |
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Mitigation
Phase: Architecture and Design
Description:
- Whenever possible, specify implementation strategies that do not introduce time variances in operations.
Mitigation
Phase: Implementation
Description:
- Often one can artificially manipulate the time which operations take or -- when operations occur -- can remove information from the attacker.
Mitigation
Phase: Implementation
Description:
- It is reasonable to add artificial or random delays so that the amount of CPU time consumed is independent of the action being taken by the application.
CAPEC-462: Cross-Domain Search Timing
An attacker initiates cross domain HTTP / GET requests and times the server responses. The timing of these responses may leak important information on what is happening on the server. Browser's same origin policy prevents the attacker from directly reading the server responses (in the absence of any other weaknesses), but does not prevent the attacker from timing the responses to requests that the attacker issued cross domain.