CVE-2022-35062 is a heap buffer overflow vulnerability identified in a specific commit (617837b) of the OTFCC project, which is a tool related to OpenType font manipulation. The vulnerability occurs in the binary at the offset /release-x64/otfccdump+0x6c0bc3, indicating a flaw in the otfccdump utility component. Heap buffer overflows happen when a program writes more data to a heap-allocated buffer than it can hold, potentially leading to memory corruption, crashes, or arbitrary code execution. In this case, the overflow does not impact confidentiality or integrity directly but results in a high impact on availability, as indicated by the CVSS vector. The CVSS score is 6.5 (medium severity), with the vector CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H, meaning the vulnerability is remotely exploitable over the network without privileges but requires user interaction. The scope is unchanged, and the impact is limited to availability. The vulnerability is classified under CWE-787 (Out-of-bounds Write). No specific vendor or product versions are listed, and no patches or known exploits in the wild have been reported as of the publication date. The lack of vendor/project information suggests this may be an open-source or less widely tracked component. The vulnerability could be triggered when a user runs or interacts with the vulnerable otfccdump utility, potentially causing denial of service or application crashes due to heap corruption.

For European organizations, the primary impact of CVE-2022-35062 is the potential for denial of service conditions when processing OpenType fonts using the vulnerable otfccdump tool. Organizations relying on font processing pipelines, font development, or automated font validation that incorporate OTFCC tools could experience service disruptions or application crashes. While the vulnerability does not directly compromise data confidentiality or integrity, availability impacts can affect workflows in design, publishing, or software development environments that handle fonts extensively. The requirement for user interaction reduces the risk of widespread automated exploitation but does not eliminate targeted attacks, especially in environments where font files are received from untrusted sources or processed automatically. Given the medium severity and lack of known exploits, the immediate risk is moderate; however, organizations should be aware of the potential for future exploit development. The impact is more pronounced in sectors with high reliance on font tooling, such as media, publishing, and software development companies across Europe.

To mitigate CVE-2022-35062, European organizations should: 1) Identify and inventory any use of the OTFCC toolset, particularly the otfccdump utility, within their environments, including development, testing, and production systems. 2) Avoid processing untrusted or unauthenticated font files using the vulnerable tool to prevent triggering the heap overflow. 3) Monitor official OTFCC repositories and security advisories for patches or updates addressing this vulnerability and apply them promptly once available. 4) Implement application-level sandboxing or containerization when running font processing tools to limit the impact of potential crashes or exploitation attempts. 5) Incorporate input validation and font file integrity checks before processing to reduce the risk of malformed font files triggering the vulnerability. 6) Educate users and administrators about the risk of opening or processing fonts from untrusted sources, emphasizing the need for caution and verification. 7) Consider alternative font processing tools with active maintenance and security support if OTFCC tools are critical but unpatched.