# CVE-2015-1157: Denial of service in n/a

> Remote attackers can cause iOS device reboots and messaging disruption by sending crafted Unicode text via SMS or WhatsApp.

- **Severity:** High 7.8 (`AV:N/AC:L/Au:N/C:N/I:N/A:C`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 28 May 2015
- **Updated:** 6 Aug 2024
- **Also known as:** GHSA-r4wc-44ww-v8f2

## What is CVE-2015-1157?

CVE-2015-1157 is a high-severity denial of service vulnerability in Apple Iphone Os, published on 28 May 2015. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

### Official description

CoreText in Apple iOS 8.x through 8.3 allows remote attackers to cause a denial of service (reboot and messaging disruption) via crafted Unicode text that is not properly handled during display truncation in the Notifications feature, as demonstrated by Arabic characters in (1) an SMS message or (2) a WhatsApp message.

Weakness: CWE-17

## Which versions are affected by CVE-2015-1157?

It affects 3 products.


Products: Apple Iphone Os, Apple Itunes, Apple Mac Os X.

## How do I fix CVE-2015-1157?

No fix has been published for CVE-2015-1157 yet. Limit exposure of the affected software until one is available.

## Is CVE-2015-1157 being exploited?

There is no known exploitation of CVE-2015-1157 in the wild and no public exploit code.

Public exploit code:

- CVE-2015-1157 telnet server (github_poc): https://github.com/perillamint/CVE-2015-1157

## Other vulnerabilities in Apple Iphone Os

- [CVE-2021-30666](https://insights.sbomify.com/CVE-2021-30666/): Apple iOS WebKit Buffer Overflow (high 8.8, exploited in the wild)
- [CVE-2021-30761](https://insights.sbomify.com/CVE-2021-30761/): Apple iOS WebKit Memory Corruption (high 8.8, exploited in the wild)
- [CVE-2021-30762](https://insights.sbomify.com/CVE-2021-30762/): Apple iOS WebKit Use-After-Free (high 8.8, exploited in the wild)
- [CVE-2016-4657](https://insights.sbomify.com/CVE-2016-4657/): Apple iOS Webkit Memory Corruption (high 8.8, exploited in the wild)
- [CVE-2019-7286](https://insights.sbomify.com/CVE-2019-7286/): Apple Multiple Products Memory Corruption (high 7.8, exploited in the wild)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2015-1157 and fix it if it is affected.

What it is: CVE-2015-1157 is a high-severity denial of service vulnerability in Apple Iphone Os, published on 28 May 2015. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2015-1157 in the wild and no public exploit code.

Affected product: Apple Iphone Os. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2015-1157/ (Markdown: https://insights.sbomify.com/CVE-2015-1157/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2015-1157
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2015-1157
- OSV: https://osv.dev/vulnerability/CVE-2015-1157

---
From sbomify Insights: https://insights.sbomify.com/CVE-2015-1157/
Summaries are generated and may contain mistakes; the official description above is the record.