A vulnerability was found in LibTIFF. It has been classified as critical.
CVE-2022-3970 is a high-severity vulnerability in LibTIFF, with a CVSS 3.1 base score of 8.8 out of 10. It can be exploited remotely over the network by an unauthenticated attacker, but only if a user takes part, for example by opening a link or file. There is no confirmed exploitation so far. EPSS estimates a 1.71% chance of exploitation within 30 days, higher than 78% of scored CVEs.
High severity with no evidence of exploitation so far.
What to do
- Update Safari to 16.5.1 or a later version.
- Update iPadOS to 16.6 or a later version.
- Update Iphone OS to 16.6 or a later version.
- Until you can update, restrict network access to the affected service so it is not reachable from untrusted networks.
- Because the attack needs a user to take part, warn users about unexpected links and files related to this product until it is patched.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| LibTIFF | LibTIFF | Not specified in the record | Not stated |
| NetApp | Active Iq Unified Manager | Not specified in the record | Not stated |
| Debian | Debian Linux | 10.0 | Not stated |
| Apple | Safari | before 16.5.1 | 16.5.1 |
| Apple | iPadOS | before 16.6 | 16.6 |
| Apple | Iphone OS | before 16.6 | 16.6 |
| Apple | macOS | before 13.5 | 13.5 |
Version data comes from the organisation that assigned the CVE. Confirm against the vendor advisory before deciding you are unaffected.
How the severity score breaks down
- Attack vector
- NetworkCan be exploited remotely over a network, including the internet.
- Attack complexity
- LowNo special conditions are needed; the attack works reliably.
- Privileges required
- NoneNo account or login is needed.
- User interaction
- RequiredA user must take an action such as opening a file or link.
- Scope
- UnchangedImpact stays within the vulnerable component.
- Confidentiality
- HighAll data handled by the component can be read.
- Integrity
- HighData or code can be modified at will.
- Availability
- HighThe component can be taken down completely.
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H. Scored by NVD.
| Scoring system | Score | Severity | Scored by |
|---|---|---|---|
| CVSS 3.1 | 6.3 | Medium | CNA (vuldb.com) |
| CVSS 3.1 | 8.8 | High | NVD |
Official description
A vulnerability was found in LibTIFF. It has been classified as critical. This affects the function TIFFReadRGBATileExt of the file libtiff/tif_getimage.c. The manipulation leads to integer overflow. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used. The name of the patch is 227500897dfb07fb7d27f7aa570050e62617e3be. It is recommended to apply a patch to fix this issue. The identifier VDB-213549 was assigned to this vulnerability.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
Timeline
- CVE record published.
- CISA published its SSVC assessment (exploitation: poc, automatable: no, technical impact: partial).
- Record last changed materially (score, affected products, status or references).
References
Patches and release notes
- gitlab.com/libtiff/libtiff/-/commit/227500897dfb07fb7d27f7aa570050e62617e3be
- support.apple.com/kb/HT213841Release Notes, Third Party Advisory
- support.apple.com/kb/HT213843Release Notes, Third Party Advisory
Third-party and government advisories
- lists.debian.org/debian-lts-announce/2023/01/msg00018.htmlMailing List, Third Party Advisory
- security.netapp.com/advisory/ntap-20221215-0009/Third Party Advisory
- vuldb.com/?id.213549Third Party Advisory, VDB Entry
Technical write-ups (may include proof of concept)
- bugs.chromium.org/p/oss-fuzz/issues/detail?id=53137Exploit, Issue Tracking, Third Party Advisory
Other references
Other vulnerabilities in LibTIFF
- 7.8 High severity
- 7.8 High severity
- 7.8 High severity
- 7.5 High severity
- 7.5 High severity
- 7.5 High severity
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