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CVE-2018-1061
python before versions 2.7.15, 3.4.9, 3.5.6rc1, 3.6.5rc1 and 3.7.0 is vulnerable to catastrophic backtracking in the difflib.IS_LINE_JUNK…
Medium6.5EPSS 4.7%
- Published
- Updated
- Reserved
- Assigned by
- redhat
Description
python before versions 2.7.15, 3.4.9, 3.5.6rc1, 3.6.5rc1 and 3.7.0 is vulnerable to catastrophic backtracking in the difflib.IS_LINE_JUNK method. An attacker could use this flaw to cause denial of service.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| redhatCNA (assigner) | 3.0 | Medium6.5 | CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H |
| NVDNVD · Modified | 3.0 | High7.5 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 4.7% · top 8.1% of all CVEs (5 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 6.5.
Weakness
Affected products
References (21)
- DSA-4306 (opens in a new tab)vendor-advisoryx_refsource_DEBIANx_transferred
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-1061 (opens in a new tab)x_refsource_CONFIRMx_transferred
- 1042001 (opens in a new tab)vdb-entryx_refsource_SECTRACKx_transferred
- [debian-lts-announce] 20180926 [SECURITY] [DLA 1520-1] python3.4 security update (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- https://bugs.python.org/issue32981 (opens in a new tab)x_refsource_CONFIRMx_transferred
- USN-3817-2 (opens in a new tab)vendor-advisoryx_refsource_UBUNTUx_transferred
- https://docs.python.org/3.6/whatsnew/changelog.html#python-3-6-5-release-candidate-1 (opens in a new tab)x_refsource_CONFIRMx_transferred
- https://docs.python.org/3.5/whatsnew/changelog.html#python-3-5-6-release-candidate-1 (opens in a new tab)x_refsource_CONFIRMx_transferred
- RHSA-2018:3505 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- RHSA-2018:3041 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- DSA-4307 (opens in a new tab)vendor-advisoryx_refsource_DEBIANx_transferred
- USN-3817-1 (opens in a new tab)vendor-advisoryx_refsource_UBUNTUx_transferred
- [debian-lts-announce] 20180925 [SECURITY] [DLA 1519-1] python2.7 security update (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- FEDORA-2019-6e1938a3c5 (opens in a new tab)vendor-advisoryx_refsource_FEDORAx_transferred
- FEDORA-2019-cf725dd20b (opens in a new tab)vendor-advisoryx_refsource_FEDORAx_transferred
- FEDORA-2019-51f1e08207 (opens in a new tab)vendor-advisoryx_refsource_FEDORAx_transferred
- RHBA-2019:0327 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- RHSA-2019:1260 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbst03951en_us (opens in a new tab)x_refsource_CONFIRMx_transferred
- RHSA-2019:3725 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- openSUSE-SU-2020:0086 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
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[](https://trackcve.app/cve/CVE-2018-1061)Record last updated .