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I. Basic Information for CVE-2021-3657
Vulnerability Information

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Vulnerability Title
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Description
A flaw was found in mbsync versions prior to 1.4.4. Due to inadequate handling of extremely large (>=2GiB) IMAP literals, malicious or compromised IMAP servers, and hypothetically even external email senders, could cause several different buffer overflows, which could conceivably be exploited for remote code execution.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
内存缓冲区边界内操作的限制不恰当
Source: NVD (National Vulnerability Database)
Vulnerability Title
Sourceforge mbsync 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Sourceforge mbsync是美国Sourceforge社区的一个应用软件。提供同步远程IMAP邮箱和本地maildir样式的邮箱 Sourceforge mbsync 存在缓冲区错误漏洞,该漏洞源于由于对非常大的 IMAP字面量的处理不足,恶意或受攻击的IMAP服务器,甚至假设外部电子邮件发送者,可能会导致几种不同的缓冲区溢出,这可能会被用于远程代码执行。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
VendorProductAffected VersionsCPESubscribe
-isync isync 1.4.4 -
II. Public POCs for CVE-2021-3657
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III. Intelligence Information for CVE-2021-3657
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IV. Related Vulnerabilities
V. Comments for CVE-2021-3657

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