# CVE-2013-1618: Information disclosure in n/a

> Remote attackers can recover plaintext from TLS connections via timing side-channel attacks on Opera browsers, exposing sensitive data.

- **Severity:** Medium 4.0 (`AV:N/AC:H/Au:N/C:P/I:P/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 8 Feb 2013
- **Updated:** 6 Aug 2024
- **Also known as:** GHSA-cjrv-3xx9-58f9

## What is CVE-2013-1618?

CVE-2013-1618 is a medium-severity vulnerability in Opera Opera Browser, published on 8 Feb 2013. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

The TLS implementation in Opera before 12.13 does not properly consider timing side-channel attacks on a MAC check operation during the processing of malformed CBC padding, which allows remote attackers to conduct distinguishing attacks and plaintext-recovery attacks via statistical analysis of timing data for crafted packets, a related issue to CVE-2013-0169.

Weakness: CWE-310

## Which versions are affected by CVE-2013-1618?

It affects 1 product.


Products: Opera Opera Browser.

## How do I fix CVE-2013-1618?

No fix has been published for CVE-2013-1618 yet. Limit exposure of the affected software until one is available.

## Is CVE-2013-1618 being exploited?

There is no known exploitation of CVE-2013-1618 in the wild and no public exploit code.

## Other vulnerabilities in Opera Opera Browser

- [CVE-2013-3211](https://insights.sbomify.com/CVE-2013-3211/): Unspecified vulnerability in Opera before 12.15 has unknown impact and attack vectors, related to a "moderately severe issue." (critical 10.0)
- [CVE-2012-4145](https://insights.sbomify.com/CVE-2012-4145/): Other in n/a (critical 10.0)
- [CVE-2012-3559](https://insights.sbomify.com/CVE-2012-3559/): Other in n/a (critical 10.0)
- [CVE-2012-3561](https://insights.sbomify.com/CVE-2012-3561/): Memory corruption in n/a (critical 10.0)
- [CVE-2011-4683](https://insights.sbomify.com/CVE-2011-4683/): Unspecified vulnerability in Opera before 11.60 has unknown impact and attack vectors, related to a "moderately severe issue." (critical 10.0)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2013-1618 and fix it if it is affected.

What it is: CVE-2013-1618 is a medium-severity vulnerability in Opera Opera Browser, published on 8 Feb 2013. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2013-1618 in the wild and no public exploit code.

Affected product: Opera Opera Browser. 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-2013-1618/ (Markdown: https://insights.sbomify.com/CVE-2013-1618/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2013-1618
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2013-1618
- OSV: https://osv.dev/vulnerability/CVE-2013-1618

---
From sbomify Insights: https://insights.sbomify.com/CVE-2013-1618/
Summaries are generated and may contain mistakes; the official description above is the record.