Log

CVE-2021-32617 edited at 22 Jun 2021 15:20:18
Description
An inefficient algorithm (quadratic complexity) was found in Exiv2 before version 0.27.4. The inefficient algorithm is triggered when Exiv2 is used to write metadata into a crafted image file. An attacker could potentially exploit the vulnerability to cause a denial of service, if they can trick the victim into running Exiv2 on a crafted image file.
- Note that this bug is only triggered when _writing_ the metadata, which is a less frequently used Exiv2 operation than _reading_ the metadata. For example, to trigger the bug in the Exiv2 command-line application, you need to add an extra command-line argument such as `rm`.
+ Note that this bug is only triggered when _writing_ the metadata, which is a less frequently used Exiv2 operation than _reading_ the metadata. For example, to trigger the bug in the Exiv2 command-line application, you need to add an extra command-line argument such as rm.
CVE-2021-29473 edited at 22 Jun 2021 15:20:11
Description
An out-of-bounds read was found in Exiv2 before version 0.27.4. An attacker could potentially exploit the vulnerability to cause a denial of service by crashing Exiv2, if they can trick the victim into running Exiv2 on a crafted image file.
- Note that this bug is only triggered when writing the metadata, which is a less frequently used Exiv2 operation than reading the metadata. For example, to trigger the bug in the Exiv2 command-line application, you need to add an extra command-line argument such as `insert`.
+ Note that this bug is only triggered when writing the metadata, which is a less frequently used Exiv2 operation than reading the metadata. For example, to trigger the bug in the Exiv2 command-line application, you need to add an extra command-line argument such as insert.
CVE-2021-29457 edited at 22 Jun 2021 15:20:01
Description
A heap buffer overflow was found in Exiv2 before version 0.27.4. The heap overflow is triggered when Exiv2 is used to write metadata into a crafted image file. An attacker could potentially exploit the vulnerability to gain code execution, if they can trick the victim into running Exiv2 on a crafted image file.
- Note that this bug is only triggered when _writing_ the metadata, which is a less frequently used Exiv2 operation than _reading_ the metadata. For example, to trigger the bug in the Exiv2 command-line application, you need to add an extra command-line argument such as `insert`.
+ Note that this bug is only triggered when _writing_ the metadata, which is a less frequently used Exiv2 operation than _reading_ the metadata. For example, to trigger the bug in the Exiv2 command-line application, you need to add an extra command-line argument such as insert.
ASA-202106-56 edited at 22 Jun 2021 13:50:56
Impact
- A remote attacker could disclose user credentials and emails through a man-in-the-middle attack on STARTTLS. A local attacker with write access to the local disk could disclose other users' emails.
+ A remote authenticated attacker or a local attacker with write access to the disk could disclose user credentials and emails.
AVG-2087 edited at 22 Jun 2021 13:49:54
Severity
- Medium
+ High
CVE-2021-33515 edited at 22 Jun 2021 13:49:54
Severity
- Medium
+ High
Type
- Man-in-the-middle
+ Information disclosure
ASA-202106-56 edited at 22 Jun 2021 13:49:54
ASA-202106-57 edited at 22 Jun 2021 13:48:16
Workaround
+ Disabling the regex sieve extension avoids the worst problems. lmtp_user_concurrency_limit may also be helpful.
Impact
+ A user could consume an excessive amount of CPU resources through crafted Sieve scripts.
ASA-202106-57 created at 22 Jun 2021 13:47:02
ASA-202106-56 edited at 22 Jun 2021 13:46:54
Workaround
+ CVE-2021-29157 can be mitigated by disabling local JWT validation in oauth2, or using a different dict driver than fs:posix. No known workaround exists for CVE-2021-33515.
Impact
+ A remote attacker could disclose user credentials and emails through a man-in-the-middle attack on STARTTLS. A local attacker with write access to the local disk could disclose other users' emails.
ASA-202106-56 created at 22 Jun 2021 13:44:20
AVG-2088 edited at 22 Jun 2021 13:43:39
Status
- Vulnerable
+ Fixed
Fixed
+ 0.5.15-1